Windows 7. Why buy it if you have more than enough powerful hardware to run vista? Windows 7 is after all just a re-release of vista.
Because as long as we stick to Windows, 7 is better than Vista in every way. Sure, you don't have to upgrade if you don't have any need to, that goes for the XP users too. But 7 is actually worth buying. Mine will arrive today along with C2Q Q9550 and Caviar Black 1TB. Nice weekend coming up.
I've been running Win7 RC1 since its release to the public, it's been great. MS really got things right this time around. But I still say that if it wasn't for games, I would be running linux in a heartbeat.
I pre-ordered it, but I'm thinking I might wait to install until the first service pack, if I can resist the temptation. (Probably not, now that I think about it.)
No reason to wait. Win7 is all things considered a minor upgrade over Vista, but it's all that tuning and optimization what makes a big difference. Win7 is like massive service pack to Vista, a service pack Vista won't be getting.
Any good reasons to stick with 32bit these days or should I go for 64bit.
Only if your CPU does not support x86_64 or you have incompatible, but needed hardware/peripherals.
I heard it costs around $200 to get Win 7. Same as when XP was newer. I hear the loading times at system startup are faster.
Get OEM version from an online retailer, depending on local prices OEM version may cost 50% less. You can't however install it on another PC and activate without contacting MS, whereas retail works on any PC but it can only be activated on one PC at any given time.