Vitamix 5200 Blender vs Ninja Detect Duo

Buy the Vitamix 5200 if you want a blender that will outlast everything else in your kitchen and you are willing to control speed by hand. Buy the Ninja Detect Duo if you want one dial and automatic sensing to do the work, plus a single-serve cup for mornings. The Vitamix wins on motor strength, jar size, blade durability and a 7-year full warranty; owners report decades of use and few failures. The Ninja wins on convenience and footprint, but its 3-speed dial, plastic jar and shorter warranty put it a tier below on build.

• Choose the Vitamix 5200 if you blend fibrous greens, frozen fruit or nut butters often and want manual control over texture with a long warranty behind it.
• Choose the Ninja Detect Duo if you want to press one dial and walk away, and you need a single-serve cup for smoothies on the go.