SCT versus random orbital sander?

It is. And it uses the same drums as Eastwood. I have a harbor freight one and it works really well.

Only Con so far, the drums are expensive and you’ll go thru them fast, though not as fast as regular sand paper or those 3M stripping wheels.
That was my fear....expensive and hard to get up here. Unless its miles ahead I'll stick with the tools I have. I would really like a tig machine though :)