Thanks man, I know he's still popular- especially here on DA but modern Sonic is just too... irritating for my tastes. And I've had too many bad experiences with the 3D games (except Generations 'cos I haven't played it yet). Been loving Sonic CD since it's re-release though!
Give Sonic Generations a shot, granted I'm a fan of the older blur and MOST of his games (really, there's stuff that doesn't fly with me either, namely 2006) but the game is just very enjoyable , besides that Classic Sonic was really great in that game.
Yeah, I've been meaning to play it- though why Sonic would want to save his friends still confuses me- with the exception of maybe Knuckles, Tails and Amy they all need sticking in a blender. And that's only because once upon a time they didn't speak
Mute Sonic is good Sonic. Anywho- I did enjoy the classic stage of the demo. The 'Modern Sonic' stage was just a case of holding down the boost button and listening to him shout 'Woo' a lot.
Don't worry, there's more platforming in the later stages of the game for Modern, besides that, if you see your fastest time on Modern, it should be around 2:10 or something. Some people managed to squeeze out 1.52 or so, there's a lot of different paths for Modern. Have fun!