I bought two of these from Woot awhile back. They are great vacs and we love that they come with two batteries.
I use this vac on hardwood and carpet. Works great. Also bought it from woot. Thinking about getting a second one and keeping it in the basement.
Got one of these one of the last times it was up. Awesome cordless vac that can actually pick up rather large crumbs and parrot leftovers from my carpet and vinyl floors. It also grooms the carpet very nicely and between it and the robot vac I got here I hardly ever break out my big upright or canister vacs anymore.
Two batteries give you plenty of run time and I usually just clean the areas the robot misses and my bird hangs out at eating and making a mess. The batteries probably run at least 25 minutes each and I usually have to swap them about once a week , or maybe two, doing just quick touch ups every day or so. Mine looked brand new and this is a significant savings over a new one.