Greg,
I was happy with my GSO RC10 until I got the Ceravolo
I didn't ever try the standard focuser so I can't comment on that. Mine was secondhand and came with a Feather Touch which I quickly swapped out for an Atlas to make enough back focus for an AO unit.
This was taken with the RC10 and SX AO-L and H-18 (KAF8300):
http://rickstevenson.smugmug.com/Ast...039_v12-X3.jpg
I should probably try a repro of that image. I've learned a few things since I did that...
Cheers,
Rick.