I've got what's rumored to be the third Dynasty DX 300 Advanced Square Wave Inverter Power supply ever to hit Arizona,.....
Brought it in for a Gov. Contract, and it payed itself off on the first job.
As a Year 2000 "Rocket Ship" it's now somewhat Passe', ....but apparently can be updated to latest spec with the addition of a coupla' new boards.
This thing has been FANTASTIC, compared to the old transformmer power supplies.......powerful, reliable ( NO problems at ALL in 10 years, and I've run the BAG offa' it)
Since than , I've had a chance to play with ALL of the new Miller and Linc stuff,.......the "Econo-Tig is indeed a good choice.
It (if I'm not mistaken) IS however an AIR COOLED torch rig, so SLOW will be the order of your days. Air cooled, combined with a "Lean" duty cycle will keep you in the 3/32 tungsten range, and Aluminum , in particular will not be a high production range venue.
Sit down, before pricing out a 100% duty cycle, water cooled rig these days,.....spendy arena, sure certain.
All best of luck,......You're about to arrive in a whole NEW universe of welding potentials, and perfection.
TIG's addictive,......so just go ahead and become hard core, right from the get go.
Best Regards,
GTC