So, I am trying to decide between the Powertig 185 and the Power i-Tig 200t.

I am new to Tig, but capable on Mig and O/A - so I am not worried about picking up the skill. I just can't decide if I will ever need to do much in the way with AL or others that require AC. I am mostly going to be doing sheet metal autobody - will the 200t be that much better? I like the looks of it, but if run into some aluminum will i be regretting my decision? The 200DV is a little to expensive right now.

Thanks for any advice.