I've got an old Jet 10x24. It has a slide mount that the 4 way post attaches to. Just had to make a new base for a Rocker that I picked up on ebay to fit that slide. I guess I hadn't thought about not having a slide for the tool post. With the 4 way, you can mount a tool holder and use a rocker under it to get some of the same effects as the lantern post. Just a bit more trouble, but it will work.

For the QTC for the 8x12 or 9x20, you might look at the one by A2Z CNC on Ebay. They have a low cost setup that I have three of, one that I intend to use on my 10x20. Just have to make another slide for it. The prices have gone up on these guys since I bought mine a couple years back. Still a good buy though. take a look at Ebay item number 320054444631. All the disclaimers, not interest in the company, just a pleased customer.

Don