The Nutribullet RX is a great blender if you take the leaking and the slipping gaskets out of consideration. The wattage is awesome, the heating function is handy, and the blending power for smoothies is fabulous. Personally, I wouldn't use a blender for making soups, as I'm just a more traditional cook. Lastly, the RX comes with a little tool to tighten or loosen the blades. Sure, this isn't riveting information, but it does seem important considering the fact that hot soup is going to be coming out of the machine. For this reason, the tightening tool is handy to ensure the blade assembly is tightly screwed onto the Souperblast pitcher to prevent leakage.

Leakages: leakages are also a reasonably common issue with the RX. Some people experience leakages from the blades and into the motor, while others find that an odd substance leaks from the blade housing and into the vessel itself. Some reviewers have explained that by removing the blade with your hands, you are squeezing the housing from the outside, therefore creating a large enough gap for the gasket to slip out of. Whereas, when using the blade remover, the housing remains unchanged. The Vitamix 5300 is a comprehensive pitcher blender, whereas the RX is a bullet blender with cups as opposed to a large pitcher Note: you never put hot liquids into the RX, you start with cool or lukewarm liquids/ingredients and the blender will heat it for you. I add that because I personally would probably make the silly mistake of thinking that if the RX is safe to heat things, it's safe to blend already-hot ingredients. During testing, we filled the main cup to maximum capacity to see how well it ran. Much like its siblings, it only took around 30-40 seconds for the Magic Bullet to blitz tough veggies such as celery into oblivion, leaving behind a perfect smoothie. According to NutriBullet, you can also crush ice in this model, but we found that its 200W motor struggled unless the ice was in small chunks. If you plan to make a lot of ice-based drinks, you’re better off opting for a more powerful model. For basic smoothies, though, it’s ideal.Like other more expensive blenders, you tend to feel the difference in the build quality, and you'll get BPA-free plastic cups. The more you pay, the more you'll get in terms of additional accessories, power and capacity. But you won't necessarily get a better blender, as we've found that a higher price doesn't always equal smoother results. The Nutribullet RX comes with a special pitcher and vented lid to make what Nutribullet marketing calls "souperblasts" (yes, you can just call it soup). Once you've loaded the pitcher with soup (or sauce) ingredients and screwed the vented lid on top, you screw it into the base. Press the "g" button on the Magic Bullet symbol at the bottom of the base until it turns red, this will turn on the heating function.

A second interesting factor to note is that the RX has a super-high wattage of 1700. This is pretty colossal compared to other Nutribullets, such as the Pro 900 which has, well, 900 watts of power. At 1700 watts, you'd hope for the smoothest smoothie ever, with not a chunk in sight. We'll assess this factor further below.

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Yes, a post on the Nutribullet blog explains that you can put ice in your blender if you're making a smoothie. However, ice should only take up about a quarter of the cup – don't overload your machine. Also, make sure the pieces you're using are no larger than 2cm cubed. How do you clean a Nutribullet? The popularity of mini blenders such as the Nutribullet has boomed over the past decade, but they won't be the best option for everyone. It's worth considering your needs before you buy, for example how much you want to make in one go, and whether you just want to make simple smoothies, or more elaborate creations.

The Blendtec has pre-programmed function buttons and "+/-" buttons for manually choosing speeds. The RX only has one button, the power button which is used for choosing the Nutriblast function or the Souperblast function

The NB Prime comes with flip-top lids for portable drinking, the RX doesn't come with flip-top lids The NMK motor has 5 buttons: pulse, power, 1-dough, 2-blend, 3-crush, Nutri Ninja (for the bullet blender), the RX doesn't have function buttons except for the Souperblast button