I think I finaly found the best telecompressor for use with my set up. I have an SBIG ST-2000XCM, Meade 12 RCX (f/8). While the Meade 6.3 and 3.3 both seemed to work--getting focus was tough. The AP .67 shows no coma edge to edge and provides a full fram flat field for easy focus at f/5.34. With the bader planetarium adapters (from AP) the AP .67 screw right onto the nose piece for easy insertion into my VanSLyke focuser. SO far, I like it.
I went from a fork mounted SCT to an EM-200 with a TSA102s. What a huge difference. The mount is a work of art and easily able to handle significant loads. Its easly to set up and a snap to polar align with the the built in polar scope. It quite and the tracking is amazing. I never dremed of taking an unguided image, but when I did I was amazed. Works perectly with self guided imagers like my SBIG ST-8xme. Its truly an imagers dream for the price and worth every penny.