MIG WELDER AND OXY-ACETYLENE TORCH
My small MIG welder, 135 Amp.  I use a mix of 75% Argon / 25% CO2.  It has a built-in regulator for gas flow.  It will handle up to 1/4" stock adequately, which is sufficient for just abouit all of my needs.  For anything heavier, I just visit my neighbor.
A fairly recent purchase.  The small Victor regulator was bought from HF on sale.  Also the cart.  It's great for Silver Soldering, as well as cutting large, awkward pieces, etc.  I found that I was replenishing the small $10.00 bottles of oxygen for the small Oxy-MAPP rig that I used all too often.