So i will start this thread off. i got win 7 early through university. i installed win 7 professional 64 bit on my desktop computer. 1.86ghz core 2 duo, 4 gb ram, evga nforce 680i motherboard, nvidia 8800 gts 640mb video card, 1tb seagate hard drive.
install: overall, HORRIBLE! yes, i grew up with windows being installed through a text based GUI, and i really had no problem with that. i also have enjoyed a proper GUI install with the most recent versions of linux, and those work excellently. unfortunately, microsoft decided to neuter its true GUI installer, and strip any functionality out of it for formatting drives, etc. if my memory serves me correctly, there is less functionality than the XP text installer. other than that, it went smoothly and no major hangups. install was fairly quick. unlike previous windows versions that ive used, the product key was not entered until after all the software was installed. i could see this being a problem, especially if the key was invalid for whatever reason (its happened to me a few times on XP, but i was alerted before installing the OS.)
user experience: terrific! everything is very snappy, loads quickly, looks amazing, etc. im liking the new task bar, the control panel is well organized (as soon as you switch out of category view) and everything, even if i has changed since XP, is where you would normally think to find it.
now i have to say, i HATED vista, and avoided it like the plague. however, microsoft really did something right this time as far as im concerned. ive been using it for about 12 hours total, and im very happy thus far. everything i have installed has worked no problem, all my usual programs like itunes, pidgin, firefox, utorrent, etc haven't had any issues. all my hardware was supported out of the box, even my 1 year old HP printer. i must say this experience is very linux like, with out alot of the command line based hassle of linux.
bottom line: if you have windows vista right now, you really should think about upgrading as soon as possible. i think you will be impressed with their solution to a lot of the problems created in vista. if you are still using xp like i was, its a worthy upgrade to xp.
please, if you have windows 7, share your experience here. i am pleasantly surprised by its performance and features! also, please ask questions. theres no way i could cover everything, nor have i even seen everything. if you have specific questions i can look, post up screenshots, etc.