Great Customer Service!
The one we initially received was defective: it would open automatically, but stay open; we had to close it by hand (whether it was on battery or the AC adaptor). I contacted the customer service number, and--after getting some info, they sent us a new trashcan top. We didn't even have to send the defective one back. Very easy to deal with. Since we've gotten the new one, it's worked great. I was worried that it wouldn't be fast enough, but it opens about as quickly as a foot-pedal-style lid. You do have get used to its opening every time you walk by the can, though. The only drawback I can see (compared to the other, smaller models) is that you need a screwdriver to change the odor filters, whereas some other models have easy pop-out buttons.