I just got this skimmer tonight for my 30g softy tank, I would have built my own but I have a really hard time making things small. So, after a bunch of reading I decided to get one of the Tunze skimmers. So, far I'm very impressed with the quality and the very small footprint (4.4" x 4.4"). It fit in my small 10g tank sump with no problem. As for noise after about an hour of running it is now dead quiet. Its still getting going so there isn't really any waste yet but from what I'm seeing it should do very good.
So, here are a couple of pictures of the unit.
Rich