I was not overewhelmed with the Epson Enhanced Matte paper. I profiled it based on the Litho Realistic paper type with my Z3100. I find its gamut to be rather small and had trouble with red-orange and yellows going out of gamut even with little saturation or contrast.
I have been using Epson Premium Luster with very fine results, and recently tried HP Premium ID Satin, which I also like. Unfortunately, I tried the HP Hahnemuhle Textured Fine Art Paper (310gsm), and was blown away by its ability to produce saturated color and dark blacks, for a matte paper. I say "unfortunately" because it is not an inexpensive paper, and it does such a nice job that I'd like to use it for most of my prints.
Where I buy my paper, the Epson Premium Luster and the HP Premium ID Satin cost about $1 per running foot on 24" rolls, while the HP Hahnemuhle costs about $3 per running foot on 24" rolls.
The 310gsm weight of the HP Hahnemuhle is great, and the paper lies quite flat with minimal weight applied for a few hours.
Where I get my paper