Shark Stratos Cordless IZ862H vs Shark Detect Pro [IW1111, IW3511, IW3615]

The Shark Stratos Cordless IZ862H is slightly more premium than the Shark Detect Pro IW3511. The Stratos is a bigger, heavier, better-built vacuum with a more powerful suction motor, resulting in better debris-pickup performance almost everywhere. While the Detect Pro is lighter, its weight feels poorly balanced, making it difficult to maneuver. That aside, the Detect Pro does have a more advanced automatic power adjustment system that responds not only to quantities of debris but also to changes in surface type and proximity to walls. Unlike the Stratos, it's also fully compatible with a self-empty dock.