I am the proud owner of a Millermatic 175 now.
Against most of the recommendations here, I went for a 230V unit, but I did get a heck of a deal on it. Now I just have to improve the user, so next up is a welding class at a local vocational school. Then it's on to making that hunk of metal in my garage into a car again.
Should be fun, and I can't wait to get started!