I'm on my first playthrough of it now. Just like I have with the other Spiderweb games I've played (GF, A2, A3, E2) I'm totally obsessed with it, and think this has to be the best game yet. I only registered the other day, and rather than wait for the CD to arrive (along with the Exile trilogy CD and BOE CD), I downloaded the full version. I just couldn't wait a day longer.
I think something in the game resonates with my Celtic ancestry and love of fantasy which draws on Celtic myths. It also brings to mind the MUD I used to play, which had an newbie area named Tara (from which druids and fighters came) and a nearby sidhe area called ShadowLands (which was only safe to be tackled as part of a high-level group containing a good mix of fighters, mages, sniper, druids and surgeons).