I too like the Feathertouch focuser which you can get with the motorised stepper motors like robofocus.
http://www.starlightinstruments.com/
Unfortunetly I cancelled my order and purchased the feathertouch Micro to give the lumicon easy guider a chance to prove itself with large ccd chips on a SCT but if I get one it will be the Feathertouch with motor drives.