Focus on motor wattage, capacity, battery life (if cordless), and blade design. Higher wattage and sharp stainless‑steel blades handle frozen fruit and ice better, while a larger jar reduces the need to blend in batches. Also consider ease of cleaning and whether the unit is corded or truly portable.

Motor power, measured in watts, determines how quickly a blender can crush ice and tough ingredients. The Ninja models range from 700 W to 900 W, offering smoother results on frozen drinks, while the 300 W portable USB‑C blender is adequate for softer fruits but may struggle with large ice cubes. Higher power usually translates to shorter blend times and smoother textures.

The Ninja Blast Max offers an 22‑oz detachable vessel, the largest among the listed options, and still weighs less than many corded blenders. The KOIOS and Mueller models also provide 22‑oz cups, but their bases are bulkier. If you need a balance of size and travel‑friendliness, the Ninja BC151 series (18 oz) is a solid middle ground.

Cordless blenders give you true on‑the‑go flexibility, especially for outdoor activities or travel where power outlets are scarce. However, they often have lower wattage (e.g., 300 W) and limited battery cycles per charge. If you prioritize power and don’t need to blend away from a socket, a corded model like the Ninja Fit or Hamilton Beach provides stronger performance for a similar price.

Detachable vessels, like the Ninja Blast Max’s Twist & Go system, let you blend, then separate the cup for easy transport without the motor base, reducing weight by about half. This design also simplifies cleaning because the jar can be washed independently. For users who frequently move between locations, a detachable cup adds convenience, while fixed‑cup models are slightly more compact.

Ninja’s lineup generally offers higher motor power (700‑900 W) and extra features such as preset programs and larger capacities, which can command a higher price. Hamilton Beach models focus on simplicity with a 14‑oz jar, one‑touch blending, and a corded design, making them more budget‑friendly. If you need premium blending power and versatility, Ninja is a better value; for basic smoothies on a tighter budget, Hamilton Beach works well.

Most models feature dishwasher‑safe jars and blades, but detachable‑blade assemblies (like the KOIOS and Mueller) require a quick rinse to avoid buildup. Corded units such as Hamilton Beach have a fixed base, so you only need to clean the jar. The USB‑C portable blender includes a cleaning brush for deeper blade access, which can be handy if you blend thicker mixtures.

The Ninja Blast Max, with its 900 W motor and dedicated “crush” program, excels at pulverizing ice and frozen fruit. The Ninja Fit (700 W) and the Ninja BC151 series also perform well on frozen blends, thanks to powerful blades and pulse technology. Lower‑powered models like the 300 W USB‑C blender can blend frozen items but may require longer run times or smaller portions.

Color choices, offered on the Ninja BC151 series, let you match the blender to your personal style or kitchen décor, which can be a fun extra for some shoppers. Functionally, aesthetics don’t affect performance, but a bright or matte finish can hide fingerprints and wear better than glossy surfaces. If you’ll be using the blender daily, pick a finish that stays looking clean with minimal effort.