Eastwood is another good option to consider. They launched their own brand of welders a few years ago that are really quite good. I bought their mig 175, have used it a lot more than I expected to, and have been extremely happy with it. I've run nearly 3 spools of wire and just about an entire bottle of gas through it now without a single hiccup. Fantastic welder...makes me look better than I really am.

http://www.eastwood.com/welders/mig-welders.html