Wanted - welder

[PorkChop]

I currently have a 130A welder (a Sealey Mightymig) that I was going to use to build my chassis. However, thinking about it, it's probably worth my while getting a more powerful welder, probably a more professional type (even though the Mightymig should be up the task, it'll be running at full chat to do it). According to what I've read, it'll be much easier to get decent welds with a more professional machine anyway.

Anyone have any recommendations for welders for me to look at or know of such a welder that's for sale? Adrian's already sold his Cebora before anyone mentions it I'd love a Portamig, but they're like hen's teeth second hand and I can't afford buying a new one because I won't use it enough...