Shark Stratos Upright AZ3002 vs Shark PowerDetect Upright Vacuum with DuoClean Detect Technology and Self-Cleaning Brushroll

Both are corded Shark uprights with HEPA filtration, self-cleaning brushrolls and DuoClean dual-brushroll heads. The Stratos AZ3002 is the more focused pet-hair machine: stronger rated suction, a sealed anti-allergen system, odor neutralizer and a powered pet brush in the box. The PowerDetect AZ3901 adds Intelli-Sense sensors that sense dirt and floor type and adjust automatically, plus a larger dust cup. Pick the Stratos for heavy shedding and allergy control; pick the PowerDetect if you want the vacuum to do the thinking and empty less often.

• Choose the Shark Stratos if you have shedding pets or allergy sufferers and want maximum suction, a sealed HEPA system and a powered pet tool included.
• Choose the Shark PowerDetect if you want automatic dirt and floor-type sensing and a bigger dust cup so you empty less often.