Maybe we could also expand the discussion to include, "do you need to match a spool gun to the machine or application" because I notice the Everlast spool guns feature different duty cycles. It may also expand your capabilities with MIG, since these will also weld steel and stainless, and may allow a slightly wider range of wire sizes.

CGC, have you used GMAW on aluminum before? I'd be curious to hear from somebody that has, and what their results have been.