When it came to the V12 versus the V15, we didn’t notice much of a difference. But compared with other cordless stick vacs and the Dyson V8, the V12 does a superior job on most floors and rugs.

The Dyson V12 Detect Slim notably features a Fluffy Optic cleaner head which illuminates microscopic dust on hard floors, making it easy to see and clean even the smallest particles. Not to ...