Well I've started using Windows 8. My old laptop is creaking along and about to give up the ghost. I've been using Windows 7 64-bit edition on it and it has been steady as a rock for quite some time now. My desktop on the other hand is an MSI based AMD machine with Windows 7 32-bit on it. It has been running fairly well but stutters a whole bunch. 8 Gigs of RAM doesn't seem to help this beast a bit. I got a new hard drive (Seagate 1 Terrabyte 6 GB/second SATA) to see if that would help with the stuttering but it didn't. So after transferring everything to the new drive, I decided it was time to try Windows 8 (64-bit - yeah!)
Well it's been a couple of days now and it seems very smooth. All my software runs. I do have to contend with the new User interface but it goes away pretty quickly after I press the Windows button on my keyboard. Some new keystrokes are saving my bacon. Win-Q brings up a search box where I can type things like excel or word to run them (or any program I need) Win-F to find any file on my hard drive. I preferred being able to hit the Windows key and just type a program name or file name but this isn't too bad.
Rock steady and pretty fast. No stuttering so far. I seem to be able to function without a touch screen.