I buy the archival backing board - it's really not expensive at all and for an acid-free surface, just easier for me to get it as part of the package.
As far as frame styles, I've got a bunch of Leia prints in simple matte black radius frames. For the wood stuff, I always look at a lot of different things and then head into the Econo-wood line to save some $. The styles look very nice and crisp - have stuff in the thin width walnut and cherry, the simple flat black 3/4" wide one (forget the name) and a couple of others - all look great.
I'd also recommend calling AF for a sample on a frame (especially wood) if you want to see them - they'll send your 3 free samples, then you have to order. Then you can do it again
