20x60 inch Canvas print
I have had very good luck with Smartpress My only advice is depending on what you're printing you might need to submit a file that is lighter/brighter then what you like on the computer. After I have my photo set, I will add +20 brightness in photoshop to get it to print how I see it on the computer.
I've printed about 100 so far and as large as 36x48 with very nice results. The first time I printed the shot below, shadow detail was lost on the inner part of the flipper and everything was just a tad darker. +20 and it came out just about perfect.
A.K.A. Mike Ronesia