Just thought some may be interested in the Bintel 10:1 Crayford for ED80 ($189.00). I bought one a few weeks ago but only just got around to fitting it. The fit was a little on the loose side, but easily fixed with a shim cut from an old piece of clear plastic packaging. The focusser works as expected but in my case I had to get an extra 35mm extension ($35.00 extra cost) to reach focus on the 1.25 diagonal I'm using. I suspect that it would easily reach focus with 2 inch diagonal. The focusser is very well built and moves very smoothly, with friction adjustment, focus lock and rotating barrel that allows the focusser to rotate relative to the OTA. I intend on putting aq spring under the focus lock screw as I have heard of similar designs losing the screws easily. Eyepiece/Diagonal clamping is by brass compression rings another nice touch. The only thing that's absent is a mounting point for my red dot finder. Considering the cost I'd give it an almost perfect score, the only downside is the loss of mounting point for a finderscope and the necessity to shim the unit to fit.
I should add that I have no affiliation with Bintel whatsoever.
