Andrew,
I wouldn't put a bigger than my 8" f/6 scope on an EQ5 mount
for imaging. Even a 10" for visual would be annoying if you were in the slightest of breezes. Sometimes I have that problem with my 8" on it's EQ5 mount. I'd go for the EQ6, a friend has one and it tracks beautifully with his C9 on it. I ordered my EQ5 with the tube legs although they are better much more rigid than the box alloy models, the tubing is still a lil thin in wall thickness and diameter. I'm going to look into making up a wooden set up out of good old aussie hardwood, should be as solid as an All Black front row
Regards