Obryn
Hero
Honestly, the PHB is just fine. Some errata, yes, but only Monster Manual I has been totally deprecated and replaced by something newer. It needed it the most, so...I agree, and I'm glad that they have mostly fixed this in the latest stuff. I honestly would not mind a revised and updated reprint of PHB1 and MM1 that had these fixes. Then again, Monster Vault has the fixes so I don't think it's absolutely necessary, but I wouldn't mind it.
Now that the game is really firing on all cylinders, a newly redesigned DMG1 with ALL the fixes, much better advice based on the current experience level with the game, written by Perkins, Laws and Schwalb, would be ideal. I'm not holding my breath, but I can wish.
But yes. I always tell folks - I can't blame them for bailing on 4e when it was still rocky, because it wasn't ready to be released when first published. But the game now? Way, way better than it was in 2008, and not just because there's more stuff for it. That errata process was annoying, but it has had a profoundly positive effect on the system.
-O