Digital BW, The Print

I'm using UT2 inkset (with Eboni) and QTR on a 1290s, and want to 
start playing around with gloss/semi-gloss papers, has anybody got
any info on the best papers, from an archival point of view that I 
might try as a start point in my trials. So far I reckon Epson
Premium semi-gloss is the 1 to use, can anybody confirm this?

Jamie Creed.