I Just got my S2 yesterday, and I gotta say, some of the things I've been dying to do on my N900 the S2 just does out of the box...

Youtube has always been a bit hit and miss on the N900, works 100% on S2

BBC Iplayer has varied from okish, to non working (and back a few times) on the N900, works 100% on the S2...

Flash is partially functional on the n900 and improvable with treaks but again, works 100% out of the box on S2.

Don't get me wrong, there are many thngs that I'll miss on the N900, most notibly truecrypt and a real keyboard...and I can't help but feel I'm not fully in control of whats going on but so far the S2 has really impressed me.