After wandering around a couple of welding shops I am confused about a TIG welder. I have a Maxstar 200 STR which is basically a portable TIG DC only machine and I want to get something that will do aluminum as well as steel. I would be willing to spend in the $2000 to $2500 range or more if necessary. The unit will be shop bound. Some of the people seem to push Miller and some Lincoln but the people say that the amperage is misleading because of the low duty cycle. I do mostly lighter things but it is nice to be able to weld heavier stuff occasionally.