I had a older HTP versa mig before this.. the new ones use a newer technology (that i can't recall.. inverter welding or something) and man... amazing and you just tell it what thickness you are welding and it sets it all for you.. really easy ****.
Yeah, I really want to get a new mig myself.
I have an old millermatic 35 , it does great work but it only takes a .035 wire and some stuff doesn't like it. Like .024 steel I have for my floor pans lol