Hi Greg,
In terms of the scopes from a personal point of view, I have found the Skywatchers pretty consistent and the view is pretty good. I have used all three and I think the bang for buck you get for the Skywatcher is pretty good. I know you mentioned weight but a goto versions I view through of a 12inch and two 14inch were good.
I have 11" CPC SCT now on JMI wheeley bar to make it easier to move but I still need to be careful with it. I am no expect on SCTs but I do use them for planetary and eaa shots which work out well.
In terms of a APO - speaking to a few owners and having used some refractors - I use them for a session when I don't have much time or energy. They don't replace my larger scopes and if I go country its the largest dobsonian I can transport.
In terms of premium mirrors and scopes - its really a personal choice as to what you want to spend on this hobby. Zambuto is definitely the standard for mirrors and then you need a structure to put it in. Carl has mentioned on his website that there is now a 18 month wait for a mirror. Just be prepared for a lengthy wait and to factor that in.
Alot of these scopes are customised and treasured by the owners including myself and I don't think I would be selling any of my premium scopes, it would be my kids doing that
Take what I say from my perspective and it maybe bias.
Hope it helps,
Mel