I bought a very nice Megami Kouhosei anime 
artbook from Planet Anime. Haven't been recently, 
but they also had books from other shows that 
sound like the sort of thing you're looking for-- 
maybe three or four different books for Berserk, 
some Love Hina, and so on. Several shelves' worth.

If you don't live in Houston or Plano, or 
anywhere else they may have a physical store, 
they still have their website:

http://www.planetanime.com

And most anime stores will special-order 
something for you, as long as you have the 
specifics in mind.

Good luck!
-Cres