Have both of them too....put the sim card in the sgs2 but.....my N900 still is in my jeans pocket, never gonna be sell this one, priceless man!!..and btw the battery last muuuuuch longer now without a sim card and 3G and all that stuff.....
Saying that must say too that the huge screen of the galaxy S2 is almost fantastic and I enjoy everything on it not only games....

Choosing between these two it's like choosing between big love and nicest looking chick aroound....couldn't go wrong with any of....