Decent skimmer. It is an older Euro-Reef design. I have never heard anything bad about them though. I know the mesh wheel mod greatly improves their performance, I think bobby did one once (possibly different skimmer but same idea though). They lost in a side by side comparison with the euro reef that i've seen but good skimmer for the money. For your size tank i'd go with the Euro-Reef 6-2.
hmm, i'll have to look up the mesh wheel mod, i've only heard of a couple others, like recirculation mod and gate valve mod. not sure what the benifits of em are though.