Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very poor quality

Bought one.Returned - unacceptable (many missed keystrokes)Bought a second one.Returned - unacceptable (top row of keyboard goes dead intermittently)Tried a third one in a bricks-and-mortar store.Did not buy - unacceptable (many missed keystrokes)The weird thing is, I bought one about three years ago and it was great. I used it until I wore it out. I could touch type at top speed with it. But I guess there is no suitable replacement- - I've had to go to a hard plastic keyboard instead. My point here is that it's not like I need to "learn how to use the device" or "there is a hardware incompatibility". The old one worked. Three new ones failed.Oh. Yeah. The mfr bitterly reports that CompUSA ripped off his idea and built their own. Maybe they did a better job . . .