Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Do not buy this pad!!!!

Down arrow key stopped sensing after 1/2 hour of use. Ordered replacement of same through Amazon. (Return process on Amazon was a snap and we had a replacement pad in 2 days. Thanks Amazon!) Second pad worked for 1/2 hour and then down arrow stopped sensing. This time I cracked open the circuit board and was able to verify that the board electronics were working but the pad refused to sense. Clearly Naki has some manufacturing bugs to work out. Went over to Best Buy and picked up two MadKatz controllers last night and they seem great. Can't speak for other pads, but this one is a 0 star.