Evan,
I have an
Everlast 250EX, inverter type TIG machine that will handle most metals, including aluminum, up to the limits of its 250A, 60% duty rating. It has adjustable AC frequency, AC balance, HF start, good ability to set and control pulse parameters, and comes with a foot pedal, and a beast of a water-cooled 18 series torch (I prefer a smaller # 20 for most things, except thicker aluminum). Changing torches is easy, since it uses standard connectors. Weighs 60 pounds, so relatively portable. It's Asian manufactured, so a bit cheaper than other brands, except the no-names. There are some online videos that compare it to the Miller Dynasty 200 DX with roughly equivalent results. My machine is several years old, so I expect Everlast has newer models available, although they still sell the 250EX. Miller has newer models as well. Worth checking out Everlast, IMO.
Doug
