... While the negative blasts flow both ways, the agreement that 3E has its redeeming points seems to be much fewer are farther between from the pro-4E side than the other way around. Noise to signal may drown out the difference, but I virtually never see 4E fans saying anything good about 3E.
I'll admit I have very little good to say about 3E, but then, I'm pretty happy with 4E. The things that annoyed me most about 3E were things that were minimized (Alignment) or removed (Vancian magic). Is 4E a toolbox for doing everything? No, but they also didn't try for it to be. I do think that the flexibility and openness of the OGL paired w/the 3.x ruleset allowed for a lot of games that would have never seen the light of day, but it was also part of why we had a horrible glut of terrible, terrible gaming books.
I'm a big fan of the things that I felt were well done (pretty much everything from Malhavoc Press, M&M, etc) and enjoy them, but I think that the 4E system fits my desires for gaming more directly.
I do have negative things to say about 3E, but I try and keep them in a constructive fashion and not just trash 3E to trash it. 3E was a huge step toward making the underlying mechanics of the game more clear and it came at a time when we needed something better. 3E was definitely better than 2E and it saved the game we love when it was looking like it might go away forever, but at the same time, I think it was a step and a transitional edition.