I am absolutely loving this game. It really is superb. I think it's one of my top three games of all time. The difficulty is pitched perfectly, the scale of the environment (and the way it feels like one big environment rather than lots of levels) is on a par with Ico. The controls just work. There's loads to do and learn but it all comes as second nature after an hour or so. The fighting is actually fun, challenging but achievable. The graphics are outstanding. The save points and water are all but perfectly placed. The camera isn't perfect but it's flexible enough to suit every situation, especially if you use a dual stick style control system. The Sands of Time ideas work really well, especially the rewind. The slow mo isn't quite so successfuly, I thought the Prince would move at full speed and the enemy would be slowed down. I don't see the point of slowing everything down cos where's the advantage? It's still fun though.
Anyway, I'd suggest everyone gets this. Brilliant.