How is Windows Vista?

The reason for not switching is because
1) Job requirement
2) Large amount of application already purchased
3) My wife said so. (most important reason)

I have a RC1 upgraded to the final Vista version and it is compatible with Slimserver/Squeezebox/EAC/FLAC (copy flac.exe to the EAC folder)/Mp3tag. I have not tried the room correction yet, but my Chaintech sound card works well with Vista's own drivers and sounds better than in XP via my headphone system. Vista is also compatible with older hardware and software (see compatibility list).

Does vista allow you to do phase and time correction?

I recently read an article about Vista.

Anyone wishing to maintain their privacy AND quality playback of music and movies should read. The author works for the following companies:

Clients

And here is his article on Vista.

Vista

To be fair, the article was answered in a AVS Forum Vista thread about a month ago. This one is a more complete answer from Microsoft. Read both and derive your own conclusions.