Shark PowerDetect Clean & Empty vs Shark PowerDetect Cordless

Both are the same Shark PowerDetect platform with the same 380W motor, 70-minute runtime, DuoClean Detect nozzle and MultiFlex wand, so cleaning performance is effectively identical. The real split is the dock: the Clean & Empty (IP3251) adds a self-emptying base that holds up to 45 days of debris and an odor cartridge, while the IP1251 is the plain stick with a 0.7 qt cup you empty by hand. The IP1251 carries a 5-year warranty and a much higher owner rating, though from a small sample; the IP3251's 4.2 average across 1,200 ratings is the more reliable signal and points to the usual auto-empty complaints. Buy the Clean & Empty if you want to stop touching dirt; buy the IP1251 if you want the same clean with less to go wrong.

• Choose the Shark PowerDetect Clean & Empty if you have pets or allergies and want the vacuum to empty itself into a sealed base after every run.
• Choose the Shark PowerDetect Cordless if you want the same suction and nozzle in a simpler, lighter stick with a longer warranty and no dock to place.