One deck I loved for the art...I actually wound up using most of the cards in ritual art projects...but it's a neat deck (a bit more traditional in that it has suits and courts).
The Dreampower Tarot by RJ Stewart. If you follow the link for a "sample spread" you'll see different cards each time and get a feel for the artwork (http://www.dreampower.com/tarot_online.html)
The cards I loved the best were The Table, The Sleeper, and The Observatory.
And even though I wasn't looking for a new deck, I picked up the Runic Tarot (by Caroline Smith, http://www.aeclectic.net/tarot/cards/runic
) since yet again, I couldn't resist the art work! I've had some really spot on readings with this deck though, so maybe my inner eye saw something my brain hadn't picked up on?
The Celtic deck is still my favorite though, and the only one I use regularly...I remember picking it up the first time specifically because it wasn't a standard tarot deck and it had fewer cards to memorize! But then I was only 17 and "quick/easy" had a lot of appeal at that point.
It's funny sometimes the things that shape the path you walk...it's far and away the best deck for me and has always been part of my path, but that had nothing to do with my "conscious" reason for taking it home with me.