Look for motor power, capacity, and portability features such as a detachable cup or built‑in handle. A higher wattage (700 W and up) will handle frozen ingredients and ice better, while a 16‑18 oz cup is ideal for single‑serve use. Also consider ease of cleaning and whether the blender includes extra programs for smoothies or nutrient extraction.

Both models blend directly in a personal cup, but the Nutri Pro offers a larger 24‑oz capacity and a 1000‑peak‑watt motor, while the Fit uses a 700‑watt motor and a 16‑oz cup. The Nutri Pro also includes two Auto‑iQ preset programs for smoothies and crushed ice, giving more automation than the Fit’s simple pulse control. If you need extra volume and preset programs, the Nutri Pro is the better choice.

The Blast Max adds a detachable Twist‑&‑Go vessel, three Auto‑IQ programs, and a larger 22‑oz capacity, which can justify a higher price for power‑hungry users. The BC151BK is a straightforward cordless blender with an 18‑oz cup and basic blending capability, making it a solid budget option. Choose the Blast Max if you value advanced programs and a bigger cup; otherwise, the BC151BK offers reliable portability at a lower cost.

Only the Ninja BL660 Professional Compact and the Ninja Compact Kitchen System include dedicated food‑processor attachments and larger pitcher options for such tasks. The personal‑size models (Fit, Nutri Pro, Blast) focus on smoothies and shakes and lack extra blades or processing bowls. If you need occasional chopping or dough, opt for a model with a processor bowl, even if it’s slightly larger.

The Ninja Fit Compact provides solid performance with a 700‑watt motor, 16‑oz cup, and pulse technology at a typically lower price point, making it great for daily use. The Nutri Pro adds a larger cup and Auto‑iQ presets for a modest price increase, offering extra convenience. Overall, the Fit balances cost and capability well for routine smoothies.

Nutrient extraction refers to the blender’s ability to break down whole fruits and vegetables, including skins and seeds, to release vitamins and fiber. Models like the Fit, Nutri Pro, and the larger BL660 emphasize this feature with high‑speed blades, which can improve the nutritional profile of your drinks. If maximizing nutrient intake is a priority, select a blender that specifically advertises this capability.

Large‑capacity models such as the BL660, Professional 1000W, and BN751 excel at batch blending for families, but they are bulkier and more expensive than personal‑size options. If you rarely make large batches, a compact personal blender will save countertop space and money while still delivering strong performance. Reserve the larger models for households that regularly prepare multiple servings at once.

Most portable Ninja blenders feature detachable cups and simple blade assemblies that can be rinsed or placed in the dishwasher, like the Fit and Nutri Pro. Models with integrated handles or twist‑&‑go vessels may have more parts, but they still usually allow quick hand‑wash of the blade and cup. Look for blenders that advertise “easy‑clean” designs to minimize post‑blend cleanup time.