Hey Greg, I have an even better question with a much simpler answer:
"how long is a piece if string?"
That said and if $200K is your limit, I'd opt for a 12" refractor for visual and a well made fork mounted 20" F3.5 Corrected Newt (that has image plane tilt adjust) for imaging
Have to say, at least from an imaging perspective and keeping the price actually affordable and delivery time realistic, I have been very happy with my AG12 though
... it can do both
THIS and THIS just change the camera. Of course if you add a 1.8X dedicated barlow then you can cover almost all bases and it is still quite fast
. It is portable enough for many people, is surprisingly easy to collimate (with Catseye tools) and holds collimation well and having used a 6" Starfire APO (the worlds finest refractor) to image with at F8, data acquisition speed is streets ahead and under good seeing conditions, the resolution is better
Now back to that piece of string, thing is......
Mike