Digital BW, The Print

I prefer Epson Premium Luster for my R2400 color prints. But now I need 
a paper with similar print qualities but which provides me with the 
capability to make dual side prints. Can anyone recommend a paper that 
has similar qualities to the Premium Luster but also allows for dual 
side printing? Quality is important here because I want to use it for 
one of my portfolios.

Thanks!

Rob Greer
http://www.robgreer.com/