I found the most impressive robot vacuum under $500. Youve never heard of it.

I originally wanted to test the 3i G10+ robot vacuum because I heard about its debris compression feature, something I had on the brain after my disappointment with the Roomba 205 DustCompactor. The G10+ also compacts dust, sparing you from dustbin emptying for a few months and freeing you from the self-empty dock. I was curious, but what I wasn't expecting was the G10+ to deliver such a high-level experience overall, especially for less than $500.

The first sign of the G10+'s brainpower...