The overall design of the Hamilton Beach is simple, but the blending cup with a fixed blade assembly inside seems to be impractical if used as a to-go cup. The materials are only average, making the blender itself look fairly jerkwater and not catchy. This, however, is expected for the price.
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.
Despite its intuitive design, the Hamilton Beach is somewhat uncomfortable to use. The blending jar attaches securely to the main body, but the assembly process is a bit of a hassle. Not only that, but it’s also more of a pain to clean than other blenders since the blade assembly isn’t removable.
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.
We tested the Hamilton Beach against a range of culinary blenders, but this machine was surprisingly the only one that didn’t pass even a single test. With its weak motor and small blending blade, it failed to blend the foods completely, resulting in grainy, rough mixtures.
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.
Pros & Cons
- Inexpensive and easy to use with one-touch blending.
- Blending cup features measuring lines.
- Compact design makes it perfect for use in small spaces.
- It is adequate for light blending performance.
- 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
- The low-powered motor limits its capabilities.
- Poorly-built quality impairs the machine’s overall performance and durability.
- It works inconsistently
- The blades are too short, which affects the blending time and final results.
- No option for hands-free operation
Although in our tests the KOIOS 850W Bullet failed to produce a silky combination of kale, spinach and celery, it is a good blender to quickly prepare frozen fruit smoothies and protein shakes. This blender does not look in really good quality, but appears firmly-designed and decently priced. There are standard issues for a blender that is tested as budget-priced, but for the most part, we were comfortable with its shortcomings.
The Hamilton Beach 51101AV, by contrast, is not satisfying enough to use. We tested it against many similarly-priced blenders and found that it couldn’t compete with any of them. Its finish and features don't quite match up to its counterparts either, with the flimsy blending cup and poorly-designed construction.
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.
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.
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.