In tried win8 a few months ago The customer preview edition they called it.  I've since restored my Win7 not because I didn't like Win 8 but because it was going to time out anyway.  What I did notice is the startup time is better as mentioned above, but it also seemed to operate a lot crisper.  Poser 8,7 and 5 all worked without a glitch.  Carrara not a problem. DS 3 and 4 were fine, but I did have a problem with DA4.5 which turned out to be caused by me.  The biggest PLUS to me was the OS footprint Win 8 used less system resources at less than 10% compared to 15-19% for a Win 7 boot. This is on an i7 laptop with 8gb ram