The AP1600 is very exciting mount that replace an AP1200GTO. I like it very much but I don't have an observatory. I can't bring them to anywhere for imaging. It is too much weight and too much load capacity for portable use.
I think an AP900GTO is much more reasonable for portable imaging platform. I'm very like cable through the mount as I used in my Mach1> it is very work for imaging.
I would like AP do it like AP1600GTO but for AP900GTO too.