What was so great about 98? I think that was by far my worst ever experience with a Microsoft product. ME was probably even less stable, but at least I didn't use that for very long. There's a whole era of PC gaming that was basically me running desperately between save points hoping to make some kind of progress before I crashed. I've been reluctant to give up XP because it's the first one I used that actually worked. Making the switch to Windows 8 in a few days, but I've been using it on a laptop on and off.
The app screen thing isn't all that bad when you think about it. It's just a replacement for the start menu, and I don't think I ever used the start menu for anything. What bugs me is that they put that as like the 'default' screen and then the desktop is an application within that, rather than the other way round. It doesn't make a great deal of difference, but it's one extra click on startup and the alt-tabbing is ass-backwards. No opinions other than that. It seems to work, which is a plus, but I'll have to see when I install it on my desktop.