Hi lee,
I decided myself to go for the gm-8.. being more portable and conveniant to setup if you have to travel and my load would be about 10kgs max and as I don`t plan on anything bigger for a while shall give me a few years service.
I plan to have my 6" astrocam (still under construction) with 70mm guidescope plus camera etc which comes to nearly 10kgs or my old genesis and addons which comes to 7.5kgs. Seen someone with 8" GSO plus extras...etc on a gm-8 and they were still happy with tracking etc..
If you plan on mounting it permanently and have the Dough go for the gm-11 but our budget only allowed for a gm-8 but I am still very happy to be getting a real mount...
