An Apo is probably out of the question, given your constraints.
You say you're sick of chromatic aberrations, but surely you must know that all practical reflectors are going to have their own aberrations, in particular coma.
Portability + aperture pretty much means an SCT or Mak, IMO - as much aperture as you can afford and carry. I prefer a fork mount for observing and portability, but that's not exactly optimal for imaging - however, if you're mostly doing solar system targets, field rotation might not be much of an issue.
I'd consider a long-focal length achromat but with any kind of aperture portability is going to suffer greatly.
You say you're sick of chromatic aberrations, but surely you must know that all practical reflectors are going to have their own aberrations, in particular coma.
Portability + aperture pretty much means an SCT or Mak, IMO - as much aperture as you can afford and carry. I prefer a fork mount for observing and portability, but that's not exactly optimal for imaging - however, if you're mostly doing solar system targets, field rotation might not be much of an issue.
I'd consider a long-focal length achromat but with any kind of aperture portability is going to suffer greatly.
