I still use an A1200 with 3.9. It's down for now till I can get the hard drive replaced.
I still consider it and MorphOS my main OS though.
I will even be adding MorphOS to the Dual G5 Power Mac my brother gave me, as a dualboot system when I can afford it. Apple seems just close enough to Amiga to be confusing
(My brother is still kicking himself for giving me this when swithing to an Intel Power Mac. >

)
To my shame, I have a Monster of a Winblows 7 Pro system. It plays games and does some of my net browsing, but I won't trust it for e-mail or many other things for that matter.