The catch
Ninja TWISTi High-Speed Blender DUO
A family round of frozen drinks won’t fit in the 34-ounce pitcher.
Side by side
Ninja TWISTi vs Vitamix Propel 510: Propel also supports soup work, while TWISTi handles thick cold bowls
Quick verdict
For bowls, cups and thick cold recipes, the TWISTi comes out on top. As an all-round kitchen blender, though, the Propel 510 is better, since it copes with soup, varied textures and longer blending sessions.
Before you buy
Why, and what it costs you
Main jar: how big the gap is
The published “Main jar” figure is 41% higher on Vitamix Propel 510: 48 ounces, against 34 ounces on Ninja TWISTi High-Speed Blender DUO.
Where this comes from
For main jar, the physical layout decides what fits, what stays separate and how you load or empty it. The percentage is worked out from the lower published figure.
The catch
Vitamix Propel 510
The Propel 750 and Ascent X series have longer warranties than its five-year term.
Ninja TWISTi High-Speed Blender DUO
- Why pick it
- Twisting tamper built in
- Two cups for travel
- The catch
- A family round of frozen drinks won’t fit in the 34-ounce pitcher.
Vitamix Propel 510
- Why pick it
- Hot soups
- Dial, ten speeds
- The catch
- The Propel 750 and Ascent X series have longer warranties than its five-year term.
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What this page compares
Thick blends at a bargain price, or a more flexible blender that also makes hot soup.
This one comes down to hot liquids and main jar first, then to the limits of your own setup.
Day to day
How each one fits your routine
Cup size may never matter if a soup routine rules out TWISTi first
TWISTi restricts hot liquids, which makes it unsuitable if the plan is to blend hot soup. Propel 510 has a documented hot-soup program, and it should be used according to its own instructions. TWISTi can still suit cold smoothies and thick bowls, but it is a poor substitute for an appliance bought specifically for hot blending. Do not infer suitability from motor power or a larger jar.
Where this comes from
Propel 510 explicitly lists Hot Soup, while the existing exact-model comparison records that SS151 does not permit hot liquids. That marks an operating boundary, and a soup program should not be read as permission for every hot ingredient.
The travel cups that come in the box differ in size
Two people do not get matching twenty-four-ounce vessels with SS151, which includes one eighteen-ounce cup and one twenty-four-ounce cup. That matters if each expects the same larger breakfast recipe. In this package, Propel 510 supplies a forty-eight-ounce jar and no personal cups. Choose TWISTi for its direct personal-container routine only if the actual cup sizes suit both people. Otherwise, allow for serving containers or compatible extras.
Where this comes from
Eighteen- and twenty-four-ounce cups plus the thirty-four-ounce pitcher make up the exact SS151 package. The cup labels describe nominal containers. They do not guarantee working volumes for every blend.
Which one fits
Pick the situations that sound like you
Thick smoothie bowls are my thing
Dense, low-liquid blends keep moving toward the blade with a tamper or a powered ingredient pusher.
- Ninja TWISTi High-Speed Blender DUO
- Better fit
- Vitamix Propel 510
- Good
Nut butter and thick spreads are what I make
Long, dense blends call for sustained power, thermal protection and tamper access.
- Ninja TWISTi High-Speed Blender DUO
- Better fit
- Vitamix Propel 510
- Good
I want cups I can blend in and take along
Ninja TWISTi High-Speed Blender DUO lists “Two included” for travel cups, while Vitamix Propel 510 lists “None”. For travel cups, the physical layout decides what fits, what stays separate and how you load or empty it.
- Ninja TWISTi High-Speed Blender DUO
- Better fit
- Vitamix Propel 510
- Depends
Frozen drinks and slushes are what I make
Ninja TWISTi High-Speed Blender DUO lists “34 ounces” for main jar, while Vitamix Propel 510 lists “48 ounces”. For main jar, the physical layout decides what fits, what stays separate and how you load or empty it.
- Ninja TWISTi High-Speed Blender DUO
- Better fit
- Vitamix Propel 510
- Good
I need crushed ice I can count on
Even crushed ice from cubes, without long stalls, is possible with the right blade shape, torque and a dedicated cycle.
- Ninja TWISTi High-Speed Blender DUO
- Better fit
- Vitamix Propel 510
- Good
Spend less than $300
This model usually sells in the serious midrange, so you are not paying for luxury trim.
- Ninja TWISTi High-Speed Blender DUO
- Better fit
- Vitamix Propel 510
- Good
In practice
Differences you will notice
Main jar: how big the gap is
The published “Main jar” figure is 41% higher on Vitamix Propel 510: 48 ounces, against 34 ounces on Ninja TWISTi High-Speed Blender DUO.
How we worked this out
For main jar, the physical layout decides what fits, what stays separate and how you load or empty it. The percentage is worked out from the lower published figure.
Option A
Ninja, SS151
TWISTi High-Speed Blender DUO
An integrated twisting tamper keeps bowls, spreads and other low-liquid blends moving in this compact 1,600-peak-watt blender.
- Best for
- Twisting tamper built in
Facts we checked
- Hot liquids: Not permitted
- Main jar: 34 ounces
- Travel cups: Two included
- SS151 does not permit hot liquids
Option B
Vitamix, Black, 48-ounce container
Propel 510
Three automatic recipes and the familiar ten-speed dial come in a practical mid-size Vitamix with a friendlier price.
- Best for
- Hot soups
Facts we checked
- Hot liquids: Soup program
- Main jar: 48 ounces
- Travel cups: None
- Hot Soup program, documented
Spec by spec
Where they really differ
| Spec | Ninja TWISTi High-Speed Blender DUO | Vitamix Propel 510 | In practice |
|---|---|---|---|
| Hot liquids | Not permitted | Soup program | When you intend to use this function, whether the unit has it can decide your shortlist. |
| Main jar | 34 ounces | 48 ounces | For main jar, the physical layout decides what fits, what stays separate and how you load or empty it. |
| Travel cups | Two included | None | For travel cups, the physical layout decides what fits, what stays separate and how you load or empty it. |
Trade-offs
What each pick costs you
With Ninja TWISTi High-Speed Blender DUO
- Hot liquids are not safe in it, so it can’t stand in for a vented blender that handles soup.
With Vitamix Propel 510
- Party batches outgrow the 48-ounce jar, although it is easy to live with day to day.
By the numbers
What the data shows
What we found across the high-end blenders we compare, plus the checked facts behind each finding.
Show the facts and the math
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Ninja TWISTi High-Speed Blender DUO |
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| Vitamix Propel 510 |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Ninja TWISTi High-Speed Blender DUO
Twisting tamper built in
See price & reviews on AmazonVitamix Propel 510
Hot soups
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