Now that i've spent some time looking at the 4e core books I've really decided that it's not the game for me. I have over $1k worth of 3e/3.5e stuff that is mostly backwards compatible with all of my 2e stuff (worth a fortune).
4e basically took a big dump on the last 15+ years of gaming for me.
Early adopting right now is a bad choice as the PHB II isn't even out (so how could I even begin to contimplate converting my game yet, when all the classes aren't even out).
Sure, the 3.x system has experienced quite a bit of bloat, and the inherent power struggle of being around for so long. But with that comes a multitude of options that, for the most part, benefit the game players.
One game I run is a really high level game. One that has truly epic heroes and bad guys. The PCs are strong enough to make changes in the world, but are dwarfed by the power of other beings. They can fight the most dangerous dragons, but their abilities are far from that of one character who in times long gone by had the arcane might to age a sun, and killed a solar system by, effectively, turning it off.
4e . . . yeah, 30th level and that's it. Nothing there shows me the power that 3e offered.
I've been working on that game for over a decade.
I wanted to like 4th edition, but I think that it is entirely too soon for a product like that to really capture the hearts and minds.