I bought an Aquatic Technologies turbo-venturi skimmer and so far so good. It cost me $50. I had to connect an air pump up to the air intake for it to draw in air correctly, but I got one for free from my college. It works better than any skimmer I've seen with the air pump connected to it imo.
ps- I don't know if mine was defective, but I recieved a lot of input saying that I needed to let the skimmer season overnight before it would intake air correctly on its own. I never gave it a chance because it works damn beautifully with the air pump connect. So nicely, in fact, that I may hook up an air pump to all my future skimmers.