Oster BLSTPB-WBL vs NutriBullet 900-Watt Pro Side-by-Side Comparison

The consistency of the Oster’s protein shake was about average and much in line with other low-powered blenders, such as the Black+Decker FusionBlade. After letting it pass through a mesh strainer, we found a small amount of dried berries remaining partially intact and this made the shake somewhat gritty. The oatmeal and almonds were mostly turned into liquid form, however. So overall, the beverage was still drinkable enough to help an athlete or gym enthusiast increase their muscle mass without feeling uncomfortable.   

Despite being second to none within its market segment, this blender abjectly surrendered to its higher-priced counterparts in terms of blending time. To manage an acceptable result, it took up to nearly three minutes, which was about one minute slower on average. For this reason, we only gave it a 5.2/10, in comparison to other personal blenders in our Protein Shake test.

The NutriBullet Pro is amazingly capable when it comes to preparing protein shakes. In this test, it was the fastest contender, mixing a silky-smooth workout drink in only 40 seconds. It blended well enough that we didn't need to shake the cup to promote contact between the food and blades. The blade spined extremely fast and together with the mighty motor, it allowed the blender to draw everything toward the blades and tear apart each at the same time without any struggle. You might notice there even wasn’t a time that food clinged to the sides of the cup.

There were also blenders that delivered the same result, such as the Ninja Fit, but they all demanded extra shaking or stirring to dislodge chunks trapped on or around the blades during the blending process. Efficiency aside, it’s apparent that your NutriBullet Pro will also outperform its rivals in terms of use ease.

The Oster BLSTPB-WBL did fairly well in this test, producing a result that was roughly the same as that of a higher-powered blender. So if you tend to focus on frozen smoothies, this device should be worth your consideration. Spinning at speed, we can assure you its blades will yield a silky frozen smoothie without a particularly intense struggle. Just make sure to give your blending cup a good shake once you notice any food getting stuck in the blades and prevent them from turning.

However, you might be wondering why it only got a 6/10 if its smoothie came out that good. Again, it was because of its longer-than-average blending time. 

In particular, after a course of testing trials, we found that a good blender for making icy beverages has to process all the frozen ingredients as fast as possible so they don’t have time to thaw and dilute the overall consistency. As such, the completion time of the Oster meant its smoothie was thinner and less ice-cream-like than faster models, namely the Ninja Fit or the  NutriBullet.

The NutriBullet completed our smoothie in less than a minute, and its results were unparalleled. Our smoothie came out exceptionally velvety. Although there were still tiny flecks of raspberry skin and strawberry seeds, this is a common occurrence when it comes to processing such ingredients. 

It’s worth noting here that no other personal blender we tested could produce such an ideal texture in the same time frame; some couldn’t even break down strawberries after a full minute. Again, this blender never demanded that we shake the cup or stir the contents, and we really couldn't be happier.

Aside from the high-speed rotation and powerful motor, we supposed the blade assembly is a factor creating this outstanding performance. Personal blenders typically feature a blade assembly with two or four prongs, but the NutriBullet is an exception. Made of first-grade stainless steel, its blade is a clear step above those of the competition, including even the pricey Ninja Nutri Pro. It isn’t super sharp, but looks thicker than most and has up to six prongs. More prongs allows for more food contact at the time so the final drink will come out faster and finer.

With the Oster, it was definitely an undertaking to extract high-fiber food into liquid form in a short period of time (20 seconds). By our cutoff point, we drained the final mixture with a mesh strainer and ended up with a substantial amount of coarse pulp. This suggested that the test was just one-third completed. 

Perhaps, if we allowed this blender a longer runtime, we would eventually get a smoother outcome. However, one noticeable point was that some personal blenders we tested could do this trick perfectly following the same time frame. (For example, the Nutri Ninja Auto-IQ). As such, the performance of this Oster means more than just a slower extraction — it also has some implications for its overall efficiency in comparison with the expensive, high-end ones.

Liquifying high-fiber whole food like leafy veggies is always a challenging task for personal blenders, but the NutriBullet’s performance really made it stand out from the rest. 

It could break all the ingredients down into their finest state in only 20 seconds. We drained the completed drink through a mesh strainer and noticed it left behind very few leafy chunks. It could produce an even better result if we blended longer. 

Actually, we didn’t expect such good results so quickly. Most of the machines we tested turned out very coarse blends on this test, such as the Magic Bullet.

The weak motor power didn’t allow the Oster BLSTPB-WBL to crush ice so the final outcome came out almost pristine but this is a common occurrence of this type of personal blender. If you want fluffy, snow-like crushed ice or desire to incorporate ice into your smoothies, we recommend more powerful blenders, like the Ninja Fit.

The NutriBullet Pro is not only capable of crushing ice cubes, it excels at it! We tested a myriad of personal blenders, and so far haven't found a single machine that can crush ice as fluffy as this one. 

It finished the test in about 40 seconds. A couple of ice chunks still remained solid, but it didn’t look like the blades would be able to grab them. Nevertheless, this NutriBullet performed wonderfully and is very deserving of the top score.