I have an Epson R3000 printer and I swear by Red River Paper. My two favorites are Polar Pearl Metallic and Artic Polar Gloss. They have sample packs and icc printer profiles on their web site.
ditto with a friend of mine
I'm running an R3000 now and have only just started using it. Epson's semi-gloss has a look I like for many shots, about to try their semi-matte.
Used to have some of my outside printed stuff, especially B&W, printed on a matte surface photorag by Hahnemuhle, not sure the exact one now. It was roll product and we had tremendous problems with the coating spalling off after printing, leaving annoying white flecks or even large patches!
Images, otherwise, looked fantastic but a 1 out of 3 success ration was far too costly.
Looking fwd to trying it again in sheet form as the depth it produced I have not seen matched by other papers.