tunze 9002 is not quite as big as a 10 gallon but are great on sound and skimming. i own an aquac remora (on my sps nano and skimmin like a champ) that is louder than the tunze i saw at reefd ups, and lonnie had the remora pro and it was about twice as loud as mine.
if you would like a berlin i have a sea clone 100 that i would give ya for 20 bucks, it is used but cleaned and back in the box it came in.