There are a lot of places you can buy a fuge for a VERY cheap price. you may be able to find one here at this link ... http://www.captivereefing.com/forumdisplay.php?f=22
or you could find a local marine aquarium club and join thier forum boards also. I do them both when i am looking for something. i usually end up going with the LMAC because of shipping costs, but on livestock i am going to start getting things here, because of the quality.
I quess it just depends on where you are and if you even have a LMAC.
On the other note, i have a fuge built into my sump and works great (when i get another pump). i have no problems with it (wxcept when my pump died on me). but either one will work. the reason i went with a in supm fuge, is just the size factor.