Vitamix Ascent X4 Blender vs Ninja Professional Plus Kitchen System BN800

Buy the Vitamix Ascent X4 if blending quality, durability and a long warranty matter most. Its 1,500-watt motor, 10 variable speeds and five programs handle smoothies, hot soup and frozen desserts with a texture few blenders match, and the 10-year full warranty backs that up. Buy the Ninja Professional Plus BN800 if you want one machine for blending, chopping and dough. It adds a food processor bowl, a single-serve cup and a 72-oz pitcher for larger batches. Owners rate both well, but the Vitamix scores slightly higher and is built to last longer.

• Choose the Vitamix Ascent X4 if you blend often, want smooth textures and hot soup from one jar, and value a 10-year warranty over extra attachments.
• Choose the Ninja Professional Plus BN800 if you want a blender, food processor and single-serve cup in one machine for a busy kitchen.