I've had my share of mmo. From EQ to WoW, I've played over 25 popular MMO's and I've had my share of experience.
The Graphics are amazing. Look at every review in these boards, and there no doubt about it, you need a decent computer to enjoy and experience the beauty this MMO has to offer.
Now the game is instanced, some people have said that they're loading time has been totally atrocious. Now seems to me the only game play they had was in the tutorial (aka lvl 1 to 20) once you get pass that, the world is still instanced, but the maps are huge. Has an example for WoW gamers, all maps are twice the size of Barrens.
Pvp is completely insane, now with the fatality system in, decapitating someone has never been so satisfying. I've yet to experience siege battle or CTF / TDM matches, but i'm very excited to try them out once i'm 80. You have a great choice of realm, pve, pvp, pvp faction, rp-pvp, to chose from. The FFA, gank anyone and anything in the pvp realm are quite fun. If a guild member pisses you off, well you can gank them! (Even if he's in the GUILD!)
The lvl is quite decent, you wont be seeing people 80 in just 3-4 days. Lvling is going to take maybe a week or two is your quite hardcore about it, playing nearly 6-8 hours per day. Now this can depend on your sever, but pve generally lvl's faster than pvp servers.
The Music in the game is quite good, nowadays though in every game i play, i take off all music and put on my own. But I've listen to some of the few pieces and the music is quite good and sets a very good mood for Age of Conan.
Now Age of Conan is an MMO, you love it or hate it. The launch has had its problem, with my experience, its normal, happens to every MMO who manage to reach nearly a million customers on its launch day ( Aka, hardly any manage that goal). So even if there's a few bugs / server problems, the game, once every settles down, I will greatly enjoy this game.