I bought a Aqua C Remora for my Nano tank and it works great. Just came out in the summer. Takes lots of stuff out of my 12 gallon. Its rated for up to 25 gallons. Marine Depot has them. You can go to their web site and read about them. Have not lost a single fish or coral since.
While I've never actually seen a deltec in person so I can't comment on their materials/craftsmanship... but I've never understood why Deltec's are so expensive. Though I'll also agree that a HOB needlewheel is probably a great skimmer.
For that size tank, check out the new Deltec MCE 300. They're new but if they work as well as their "big brothers" they should be the cream of the crop. There's talk of an H&S HOB skimmer to be available soon as well. These skimmer are certainly on the expensive side but they are some of the most effecient skimmers on the market and pull some nasty stuff.