Thanks for the reply mrfuzzy, i did not have any particular model Migatronic in mind.
I was reading some of the old posts here and someone said that Migatronics were the best on car body work. I know that Portamigs tend to get top billing here on the forum, so i just wondered which of the two was the best.
I think i think one of the Portamig sets goes down to 20amps which sounds ideal, but i don't know about the equivalent Migatronic, i am just curious, with an eye to future possibilities of purchasing.