Windows 7 Install
Bit the bullet and installed W7 on my HTPC, using an SSD for the boot drive. Only issue that was thrown up was the Sil 3114 RAID controller on one of my PCI cards was not installed. Quick trawl of the net yielded some Vista drivers tried those, card wouldn't start error 10. Bah! did a Windows update, following which I was informed that there were other optional updates, quick scan of these showed Sil 3114 driver, installed bam RAID controller working, not only that but the XP dynamic disks on this card were picked up and mounted. All the doohickeys attached to this machine had drivers available or were relatively easily installed. Doohickeys include, EP45 UD3R mobo, Q6600 cpu, 1394 card, Sil 3114 RAID card, Hauppage PVR 150, Snapstrem Firefly RF Remote, Eye-Fi manager. Response from the SSD is very good, the armchair experience is snappy, the only lasting annoyance are the Nvidia drivers, Nvidia just can't seem to get their heads around the fact that most people still have CRT TVs, I had to downgrade to older drivers to get the overscan to work properly on my TV, but I had similar problems with XP Nvidia drivers.
Overall a good experience, but then my old XP install was approaching 5 years old and was very creaky, if I wasn't planning a total reinstall and I didn't have a Technet sub would I have done it? Probably not.