If you're willing to spend a little time learning the threading, and you don't want to spend a lot of $$, the Brother is a good one. I just bought this serger to replace an older model that fell of a table (don't ask!).
http://www.amazon.com/Brother-1034D-...brother+1034+d
It's a great entry-level machine for someone who isn't convinced they really need a serger. I'm an experienced serger and garment sewer, so I can make mine do some tricks too. LOL