I just last week bought a new Miller 180 mig. It has just been released to the market and is not on the Miller web site yet. I bought it off Ebay from Indiana Oxegen. The thing about the new 180 is the voltage setting instead of having just 4 clicks to set it on it has knob just like the wire speed so you can dial in the exact voltage you need. I really like it. Here is a link to the company. The new Miller is not on Ebay you will have to call and ask about it.
It was $742.00 delivered to the door.