And did you have trouble finding drivers for it?  If you know of a place to find x64 drivers, can you post it here?

Also:  Did you find that having an x64 OS causes more headaches than it's worth, or not?

Another Question:  Do you prefer Vista X64 to XP x64?  Just wondering due to the support of DX10 in Vista only.

Vista x64 Ultimate here as well.  I would not touch XP 64bit for the very reason you mentioned... drivers.  MS has not nurtured the OS and not very many drivers are actively written for it.  On the other hand, in order for a driver to be WHQL certified for Vista, it has to be designed for both x86 and x64 versions of Vista.  So, if something works with Vista, it will work regardless of 32 or 64bit.

Unless you decide to try to get a 10 year old HP All in one printer working with Vista 64bit, or an old program that relies on kernel mode drivers (most virus scanners, partition managers, system level defraggers like disk keeper, etc), you will be fine.

Well, with windows 7....how long will these new releases last until they decide you have to buy it?  I am also considering a multiboot system.  XP Pro x64, Vista Ultimate x64 (if I can get a legit key) and possibly Windows 7 x64.

I was just gonna post that I found that it ends in March of 2010....I think I will try to install it on a seperate partition and multiboot to it.  That way I have something to fall back on.

Win 7 x64! w00t! I have only had issues with syncing my iphone, but I think that has to do with the USB subsystem... So I just plug it in to my Vista 64 machine... Only thing that I miss from 32 bit is Gametap exclusive games... Sam and Max.

Yes, W7 does support DX10/10.1

Would be pretty idiotic to make an OS not support DX10, when the one before it, did. I guess that's why you won't find much on it. It's assumed.

Just installed Windows 7 x64 on a test lenovo machine here at work.  Not impressed but not un-impressed either. Seems better than Vista, but I'll have to see whether it stacks up to XP x64 performance wise.

Ya, that's been my experience as well.  Outside the new taskbar which will take some getting used to, the things that still frustrate me about Vista are still there in Win7.  An example is the networking control panel is still a cluttered mess and it takes too many clicks to get to the basic network connections to disable or tweak settings.  Things like UAC are a non-issue for me since i use TweakUAC which leaves it enabled (i'm still running as a slightly less than Admin user), but supresses the extraneous prompts.  They still haven't added outbound firewall notifications similar to Zonealarm where it will block all by default and prompt you when a new app wants to access the network.  As many have said, it is basically what Vista should have been (in terms of performance and polish) but not much more.

I have a dual boot to both windows 7 and Xp x64...and to my old installation.  I am giving 7 a try to see if i like it, but I can already tell that it's too vista 'ish.  nstuff is right about the network control panel...it's too cluttered with useless info.  Plus my gig connection is considered 'pubilc'  and will not let me change it.  Otherwise, I kind of like it.