Ron, Larry,
Thanks for your thoughts about these mounts. As you no doubt have noticed,
the A-P web site features the 130 Starfire (pardon my earlier typo) f/6
prominently on the 400gto and recommends it for use with this mount, except
for "serious" astrophotography. I get the impression from what I read here
and elsewhere though that the ap400 is a little bit light even for visual
use with the 130mm scope.

I had thought (or wished) that the ap400 is substantially stabler than an
EM-10 and closer to an EM-200.

-- Eric