Gamervision may be the minority on this, but they were disappointed with Patapon. Leading up to the release Gamervision became steadily more excited, but the faults of the title are simply too many and the gameplay is simply not as fun as it seems at first. While it may seem like they are being overly negative about the game it is just because of how high their expectations were.
The cheery music and shiny graphics may be enough to hypnotize you into having a good time and that isn't really a bad thing. At a price of $20 it is hard for me not to recommend you purchase the title if you own a PSP, just don't expect perfection.
Verdict: Buy it