A number of years ago when I was looking for a mig, I checked out everyone's unit. I ended up with the HTP 140, 120 volt model. it's been a pleasure to use absolutely flawless. It can do stitch welding and also has reverse polarity. I can't praise it enough, one of the best pieces of equipment I ever bought. Check the duty cycle out! Very well made welder!
I stayed with the 120 volt for portability and if I need to have something bigger to weld, I'll have a pro welder do it.
Here's the link http://www.htpweld.com/product_page/...s/mig_140.html