What are you welding with?
I have a Miller 140 that I really like for sheet metal, Miller 350 TIG Runner, and an Everlast PowerTIG 250EX.
I have my Miller welders, but for the money you absolutely can not go wrong with Everlast brand welders.
Everlast Inverter Welders Equipment - Welding Supply Company - Official Website
Very reasonable priced, 5-year warranty. Honestly I'll probably never buy another Miller for what they cost and if I need another welder it would be an Everlast.
Tom