I highly recommend giving it another try, I'm super picky and modern KDE simply delivers the best and most flexible desktop experience, bar none.
KDE 6 is really good tho. It's so fast, works great, Dolphin is the absolute best file manager there is...
I totally hated that whole mess. It almost ruined KDE for me. The real disaster there wasn't that KDE released v4 prematurely, but that they didn't make it crystal clear to the distro maintainers (and end-users) that it was not ready for "prime time" use yet (it was basically "pre-release"/alpha quality), and the major distros of the time jumped on making it the default (forced it on everyone) when it was still basically utterly broken compared to the prior versions of KDE (which had become overall quite solid and reliable by that point).