Go with a popular "name brand" welder not the cheap ones. You will only be disappointed at cheap things. Miller, hobart, Lincoln, hot arc, Esab are good machine, it depends on your price. Anything less than $200 - $300 - (just my opinion)! If you think the wire welding wire welding (mig) without forget it. They are only bad welding production, designed for welding "art". Flux-cored welding was first used on metal thick slices of gas, and then someone found you can use it in the case of no gas, people think that it is a good weld.
I have a Hobart (Hobart) processor, it's not an ounce of trouble, it is about 25 years old, let's see some people say that those cheap! Good luck! Just don't want to see your money.