I've been playing this one quite a bit... and like gregN i was let down by psu and loved PSO
the good news is this game totally ditches almost everything about PSU and keeps all the great PSO stuff... much more of a coop experience than a item and EXP race. In fact everyone in the game gets their own items, whoring all the items is impossible
only part I don't like is you have to beat most of the stages in single player to unlock them online, which sucks as I didn't plan on playing the single player at all until the US version came out.