Bella Rocket Blender 12-Piece Set vs. KOIOS Pro 850W Bullet Side-by-Side Comparison
Bella Rocket Blender 12-Piece Set vs. KOIOS Pro 850W Bullet. Both produce comparable smoothie-making results, but the KOIOS appears to be more practical.

Specifications
Design
The overall design of the BELLA is functional, but not particularly eye-catching so we’re not fans of neither its styling nor quality. Nevertheless, considering its affordability, along with a suit of practical accessories, we agree this blender is still a good value for money.
The KOIOS Bullet comes standard with a compact motor base and stainless steel blades. It features only one speed setting, which is not unusual for this type of machine. Sleek and shiny looking, it has a cute, distinctive personality you won’t find in many rival personal blenders. Unfortunately, its motor base has some poor-quality inner components — we expect better even at this price point.
Usability
The BELLA remains one of the most user-friendly personal blenders on the market due to its simple operation, straightforward assembly, and hassle-free cleaning process. The lack of pulse function may make it tricky to create chunky textures, but we believe it won’t take much time to find the way
The KOIOS didn’t receive a higher usability score because it doesn’t allow for hands-free operation. However, it is still among the most user-friendly personal blenders out there on the merits of its straightforward operation, easy assembly, and effortless cleaning.
Performance
The BELLA is finely capable of preparing protein shakes and frozen fruit smoothies, but comes up short in liquifying leafy greens and pulverizing ice cues. For those that can make such compromises, this blender is the easy choice considering its price and the long list of extra accessories. Otherwise, we suggest considering the KOIOS Pro, which is similarly priced but offers more advanced capabilities.
The KOIOS Bullet did relatively well in three out of our four tests. It couldn’t power through ice cubes in the final round, but that didn’t worry us — the same is true for most mid-range blenders. The blended fruity drinks were above average. However, the fibrous greens should be blended longer than our 20-second time limit if you want decent results.
Overall Scores
Pros & Cons
- Adequate build quality allows for reliable performance.
- The motor is less likely to overheat like some of its rivals.
- It’s pretty good at processing frozen fruits and raw nuts.
- Its ease of use provides a satisfying blending experience.
- Competitive price tag
- Extra extractor blade for dry blending
- Powerful motor allows for a wide range of tasks
- Two blending cups are included
- Intuitive to use
- The blades can be removed from the base for thorough cleaning
- It may not add any aesthetic interest to your kitchen due to its inspired design.
- The ability to liquify fibrous greens is compromised by the low price.
- The resting period between blending intervals is longer than average, taking up to 3 minutes.
- No option for hands-free operation
Conclusion
Both blenders are similarly priced and come with a generous set of accessories, but the KOIOS Pro 850W Bullet outperformed the Bella Rocket Blender 12-Piece Set in processing raw nuts, dried berries, and high-fiber foods. As a result, the protein shakes and fibrous mixtures the KOIOS produced had superior nutrient extraction and smoother texture compared to those from the Bella, despite the tiny chunks here and there. When it came to making the perfect smoothie, the BELLA Rocket Blender and the KOIOS Pro 850W Bullet both offered comparable performance. However, our data revealed that the Bella was slightly faster in this regard.
In terms of construction, both blenders are moderately built, but the KOIOS has a sleeker metal finish and offers more stable operation, giving it an edge over the functional yet flimsy-looking Bella. Considering all factors, we recommend the KOIOS 850W Bullet over the Bella Rocket.
Behind the Comparison
Tina Pham is a staff writer and reviewer, with five years of experience in the industry. As a passionate amateur home cook, she loves to discover practical cooking solutions, and has made it her mission to bring her findings to every kitchen. Her ultimate goal is making cooking more of a pleasure for all.
Lap is Head of the Research, Testing, and Review Team (RTR Team) at HealthyKitchen101.com, where he directs and supervises the testing of kitchen gadgets and appliances.
Tuyet Pham is an award-winning Saigonese chef passionate about delicious and healthful foods. At HealthyKitchen101, she develops recipes and collaborates with our Research, Testing, and Review lab to evaluate the performance of cooking appliances. Her assessments add a strong authoritative voice to our product scoring process.