PMC8 does currently seem to be limited to Windows PC/Tablet, if so then the AstroEQ with Eqmod on PC/tablet would seem to be a much cheaper alternative. For the g11 there are any number of stepper motor kits you can get from various other commercial stepper systems or you could diy your own Nema17 direct drive. If the PMC8 can offer Alt/Az mode then that would be nice as the AstroEq /Eqmod does not offer that, as then it would be viable to use with the the AZ8 mount. Further the Gemini1 and Sitech servo systems support encoders which is nice if you want to declutch for refugees rebalance or manual movement. G2 is yet to implement encoder support.
AstroEq stepper direct drive for G11
http://www.iceinspace.com.au/forum/s....php?p=1186990