I'm steering clear of it. My experience with Win 8 preview was less than pleasing because the damn thing refused to install. No biggie though.
Uvah, me old matey, I had the same issue with the Consumer Preview [wouldn't install correctly] but the Release Preview installed without a hitch. The only thing I had to do was make Win 7 the default OS, because with Win 8 on a dual boot system, it will revert back to the boot menu when selecting Win 7 to load, thus prolonging the boot time. Once I made Win 7 the default OS my boot times went back to the 25 - 28 seconds and all was good.
As for the Metro debacle, well you don't see that with the updated version of Stardock's Start8, and with Winstep Xtreme installed you can remain indefinitely in the desktop without having to revert to Metro to access your programs, etc. It's just like working with Win 7 only faster. Yes, faster! I haven't spent a great deal of time in Win 8 as yet, but my experience so far [running the two on the same hardware to get a fair comparison] is that it is a meaner, leaner and faster OS than Win 7.
Okay, so Win 8 doesn't retain the start button and start menu, and that's a pain in the arse, but Winstep Xtreme addresses that issue and there are free 3rd party apps like Vistart that replace the traditional button and menu that we became accustomed to in Vista and Win 7. Yes, it says that Vistart is to give the feel of the Vista start menu in XP, but it works perfectly well in Win 8.
So, despite my earlier reservations, Win 8 can be made to operate like a regular desktop OS, and at 40 bucks its a bit hard to pass it up when there are several advantages over Win 7... eg, native ISO support, new and improved search functions.