Which Mig welder to buy?

220 amp welder hands down -better duty cycle , If you have 220 in shop get a 220 welder

115 amp welders are toys- short duty cycle and welding amps drop off very quickly

Both worlds with a Hobart 210MVP. No complaints yet.

http://www.mig-welder-reviews.com/the-best-mig-welder/