[WSSix]

Check out Hobart welders. They are very similar to Miller considering Miller owns them. As a hobbyist, I couldn't justify the cost of a Miller which is typically more professional grade. I have the Hobart 140 and have done my coil over conversion and subframe connectors no problem. It will handle anything I need it to. I can even adapt it to weld aluminum using a spool gun if needed. Since you're wanting 220v, they offer machines that come ready for a spool gun should you want to weld aluminum.

What I would do is look at your budget and be very honest with yourself and what you'll be welding. You may find that a simple, quality 110v welder will handle 90% of what you'll ever do. For the thicker stuff, hiring a pro may prove cheaper in the long run.