I concur...I have a prizm on my nano tank and it's the biggest POS that I've ever encounterd. Coming from the Interior, you don't want to know what I paid for it either when I first setup my 70G.
Just off the cuff, I just bought a Bubble Magus BMQQ nano HOB skimmer. I cleaned it thoroughly and then threw it in as a secondary skimmer on my main tank to test it out. Pulls about 5x in a day as a secondary skimmer as my prizm pulls as a primary on my nano. It's really pretty well built and I'm impressed with it. Here's a link...it says it can do up to 55G...but remember that it's a small skimmer.
http://www.nuocean.com/skimmers/bubble-magus-bmqq.html