OS's
Windows 7 for the home PC - great OS...
Android for the phone - another great OS...
Both do what their designed for brilliantly.
What I don't understand is Apples insistancy that multitasking is a bad thing; seriously, my Amiga 1200 could do it back in the day, I wouldnt expect any OS I own these days to not multitask. If / when Apple get their heads out of their arses and fix the multitasking issue they will then be a serious long term competitor in my opinion, the only thing keeping the Ipad / Iphone up "there" in my opinion is the App Store and Apple seem determined to kill that with fire lately.
At the moment MS are doing well for me on the PC but if / when Google bring out a fully fledged decent OS that runs 90% of games and is stable enough I'll be there like a shot.