I've been reading a lot of threads here but there seems to be quite a bit of confusion. I'm buying myself (and my wife) each a top end iMac, 3.06GHz, 4GB RAM, NVIDIA 8800GS, etc. We both do gaming and will be running them via Boot Camp. However, we also have some other things we need Windows for that we would want to use quickly and efficiently without rebooting (I sync my BlackBerry with Windows, she syncs her Zune, neither are easily compatible with Mac if at all so we want to use Windows via VMware Fusion). 1. Which 64 bit OS would be better for us using Windows in both worlds like that? 2. I've heard that Vista x64 has issues installing and requires some tweaking, I've also heard of people having reactivation issues, and that the Aero skin doesn't work in VMware Fusion so next time you boot back via Boot Camp it will remain disabled even though I would want to use it within Boot Camp most likely (if not, that isn't a huge deal I just want it to work well)? Oh, and our Vista disk is Home Premium and is NOT an SP1 disk, some people seem to claim only the SP1 disk has this issue. 3. If SP1 IS the issue, can you update to SP1 after installing stock Vista? Or will using SP1 in any capacity not work well/require some tweaking or updates? 4. I want to get the most painless experience possible with the best performance, and Vista will be getting constant improvements whereas XP is at the end of the line. Plus I'm IT so I need to learn Vista anyway even though I don't like it... So which 64 bit OS will work best for both my gaming and emulation within OS X itself for things like our Zune/Blackberry? Your help is greatly appreciated, thanks!