I'm loving it. I found a "secret" hidden area in Lion's Gate last night that was just awesome (and had pirate booty in it). I hope there's more stuff like that because I totally wasn't expecting it. The world vs. world stuff also reminds me a lot of DAoC, which I miss.
Don't let some of the reviews fool you though. There's still quests. They just moved them to hearts instead. The dynamic stuff is interesting, but still just quests. If you hate MMOs then I doubt GW2 will change your mind. If you enjoy MMOs, though, then GW2 does a lot of stuff right.
And don't let GW1 put you off. GW2 is nothing like GW1.