Can you recommend me a mig welder?

Depends on what application you need it for. 110v are good for sheet metal work but if you want something that will cover more needs, I use a 220v Lincoln that's great for all things. I think I paid about 600 bucks but its been a great little box. I also have a miller 215 which is more of an industrial unit but that will do everything but its real spendy. Hobart 110v boxes are great for sheet metal. I'd stay away from the real cheap stuff because you get what you pay for.