I got the PAL version since yesterday. (The Netherlands) I played a couple of hours and I like it more than the last 3D Sonic’s released. (after SA dreamcast).
The game is pretty fun, and can also be pretty hard at times. The graphics are a mixed bag imo, with the first level being not so good looking, the second level and 3rd looks heaps better. These are the best graphics I have seen on the Wii to date, but I am kinda spoiled by the fact that I also have a Xbox 360, but for Wii it looks pretty good.
As for gameplay, the gameplay is also a mixed bag. The controls are fun but there are some weird quirks in the camera which can get stuck sometimes and you can't get it to center again, there are no camera controls. Also the wiimote isn't accurate enough, Oo yeah you will adjust after maybe a hour of playing, but the controls aren't spot on.
The speed in Sonic games is essential and let me tell you,it's FAAAAAAAAAAAAAAAAST at times.
The music is very corny, but not necessary in a bad way(well not so bad as some reviews) I am so busy concentrating on the speed and the game that I hardly have time to listen to it.
All in all a pretty okay game, worth a buy to keep your Wii from collecting dust.
PS: the mini games are kinda fun.