After playing the Console version of this I was majorly dissapointed in the PSP version. Controlls are not flakey and no free roam. Graphics also look not up to par with the rest of the racing games on the PSP.
If all the new titles on the PSP get this sort of treatment it will probaly spell an end to that system.
PSP needs good, quality games, not 1/4 done ports.
There was only one really challenging event, almost impossible to beat, the category that you had to collect a certain amount money you can get by pretty much hitting everything in your path, everything else was pretty simple, but awesome. So a 7 is good enough.