Miller, Hobart, and Lincoln all make quality MIG welders. One thing about a 115v welder is the duty cycle can be relativly low. That means if you have a considerable amount of continuous welding to do, it may high temp trip out on you and you will have to let it cool.
I know you don't want to hear about not buying a 115v welder, but I can buy a Miller 175 for $650 U.S. A 230v welder will serve you much better than a 115v IMO. How often are you actually going to weld away from home? The max input load of the Miller 175 is a mere 19.5 amps. A 30 amp double pole breaker with #10 AWG wire is more than suitable. This is an inexpensive upgrade.