i have the game as well mate - i would say the gameplay feels a bit smoother than PES 6, but this is the Japanese version - we still have the proper PES to come out yet - maybe they will fix some stuff in there. Aslo I have noticed that there is a bit of slowdown when a player gets near the opposition penalty area - this is a bit annoying.
Great review btw mate
P.S. You can edit the menus and balls and kits and stuff, if you get an Option File or physcially edit the ISO yourself