Our favorite (we use it to print portraits for our photo studio) is Epson's pro lustre paper - we usually get it from comp USA. We get 8.5x11 and 11.5x17 (to print 11x14's.) They make a larger size, but our printer won't do larger than that, so anything larger goes to a custom lab - and now my 12x12's will be printed through GDS
. Anyway we use a cannon i9900 printer.