Well, I think it has a very nice keyboard feel, and it certainly does its job too. as for Apps, the symbian app store obviously doesn't exist anymore, so you have to get them from external sources.
I have used an E66 and been still using an E72. I would recommend both, for particular purposes. An E66 is probably one of the best models to mess around with the system and learn how Symbian operates. An E72, on the other hand, could be one of the most practical devices with its QWERTY keyboard, relatively new firmware and decent processor/memory. I also have gigs of Symbian stuff, so you may just get in touch with me.
Well I also have a still working 5230 Xpress Music if I remember the model correctly, but it's much harder to use with Talks unless you're familiar with Mobile Speak.