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Meade ACF or Edge HD or the Vixen VMC260 as Terry recommended.
Standard SCTs are not the best for imaging although I have seen some stunning C8 images and also great C9.25 images. Mirror flop, dew on the corrector, image shift when focusing, tube currents all conspire to make them awkward.
RCs are not the best for visual as they usually have a large central obstruction. They are among the best for for imaging though.
Overall though I think you are on the wrong track here.
Unless you are experienced at imaging you will find imaging much more fruitful if you start off with short focal length imaging like your ED80 or something similar. Aperture is less important for imaging than it is for visual.
Getting round stars in a 10 minute image is your first target. You won't get it with the equipment you have listed nor with these super long focal length scopes. You are likely to have a loss.
My recommendation is 2 scopes. Image with your ED80 and get everything working with 10 minute round stars in images as your target and use an SCT for visual or something similar.
Once you've got some runs on the board with the shorter focal length try it out with the longer focal length.
The Vixen would be good here as it would probably be good for both purposes although I am not sure how it is as a visual instrument as I thought it was slanted more towards imaging (the 2 have conflicting requirements).
The only few instruments that excel as both imaging and visual are APO refractors or corrected Dall Kirkhams and perhaps Newts (but they tend to be short focal length).
Large aperture APOs are super expensive but there is a large amount of choice and value in the 100mm band. You want a triplet with a decent focuser and around 100mm aperture and accessories like a flattener if you are using a DSLR or larger sensor.
Greg.
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