Vista Build 5456 not so bad?

This is a little reassuring after installing the slow and extremely buggy Beta 2. I understand that it's a beta and all, but the first public release of Windows XP a few years ago (a half-decade, actually) was much more polished and stable than this monstrosity. I hope Microsoft makes build 5456 publicly available soon, because I'm ready to ditch Vista and reinstall XP.