Hey Vince
I own an Atlas 618 as well. I know now that Wedge style is better, and steel is better.
BUT I got one of these QCTP's from A2Z years ago, (and a bunch of other A2Z stuff) and it has all been great.
That T 4 Cheap post looks pretty nice, and IS steel and wedge. Pretty good for $125, if it is good.
Another option that is hard to find is the Sherline QCTP. I got one on EBay once, and adapted the A2Z holders to it. Solid steel, totally heavy!
Bernie