Instruct: Classify a review into positive or negative sentiment.
Query: Doesn't live up to its predecessor...

I have used the N50 for almost 4 years now. I thought the n52 would be a step up... more buttons have to be better right? Unfortunately that isn't the case. The D-pad was EXTREMELY sluggish and unresponsive compared to the n50. I finally had enough of the n52 and replaced it with my n50. Things are good again. I really lived having more buttons, too bad Nostromo couldn't follow through with the quality they had for the n50.