Been a PC user most of my life, however I made the transition to mac about 4 years ago. I personally found it easy to move to mac and very easy to get used to. I now find it hard to get used to windows again; as I've been without my MBP and iMac since I went on vacation. Anyways...besides the point..
Mac OS X runs perfect for me on my iMac, it's booted with 3Ghz and 4GB Ram. It also runs Bootcamp with XP Pro and that loads quickly too.
I found that a few years ago the Mac OS was a lot quicker, Tiger I would say is better than Leopard, imho, I have found little annoying things happen to me in Leopard...One thing that took me a while to get used to was font smoothing, being on windows you're used to the fonts being pixel..thats just a little weird thing that took me a while to get used to.
I'll speak to you on msn (jamie_b1989@hotmail dot com)