I prefer Epson Hot Press Bright and Breathing Color's Optica 1. The later has OB's but the output has great detail and DMAX. Optica 1 has a very smooth finish and allows for a very detailed print. Has a bit of a curl issue as the roll gets used however.
I missed the previous post on subject. I am printing mainly outdoor scenic work all digital capture. I also do some limited printing for local artists. For that type of work, which is mainly watercolor repro, I don't use the Optica 1 and use Canson's Arches textured paper. For my personal work (examples on my website) I prefer the two papers I first listed. Optica 1 allows very fine details to be printed and has an excellent DMAX, I realize that is due partly to OBA's.
Paul Caldwell