Im trying to decide on what welder to buy, I have used oxy-acetolene and stick welders for years and some mig and tig but mostly on steel, now im going to be doing quite a bit of aluminum work also,Im looking to find the best choice for a hodrod shop I own,some guys suggest the miller 251 with optional 30a spool gun for aluminum, som suggest a miller 200 tig setup, speed is not important to me, good looking welds on both aluminum and steel up to a max of 3/8" is and I would like to be able to work on the small parts also on occasion, YOUR ADVISE GENTELMAN WOULD BE HELPFUL