Mill-Drill CNC retrofits

Hi folks,

I'm doing some research on which CNC retrofit will work best for my
Rong-Fu/Enco-Grizzle Round-Column Mill-Drill (actually a Busy Bee
Model 1977).

What I am looking for is something that I can "bolt-on" without too
many modifications to the mill, and, of course, something reasonably
priced. So far I have looked at:

- IndustrialHobbies
- Microkinetics
- FlashcutCNC
- AjaxCNC
- CNCMasters

I would be interested to know who out there has dealt with any of
these vendors and performed their retrofits. Are their retrofits
easy to perform? Is the performance of the retrofit system
reasonable? Were you satisfied with their service, support & price?
Are there any other vendors you could recommend - particularly in
Canada?

If you prefer to not post your opinion on the board,please drop me
an e-mail at chris.armour@....

thanks!

Chris