I liike taps. First one is an SPT Lincoln the second a HH210 Lot of splatter in the first but I really didnt look when I did it, the SP with a 5 speed like you find at those stores with 030 is about perfect.
The Hobart is almost perfect and it would be an operator thing. I found a spot between gears when doing critical testing but no general operator could tell the difference. The real need to move most machines for 120V use is over rated,, in my case it is, but there is nothing that would stop me from a Hobart over ther Miller, the Miller has a couple gadgets on it that wouldnt mean a pinch of **** to me.
As for concern about alum vs plastic,,, that type of thing is a non issue here, some of it is better,, they would like to change sometimes but sales get in the way.