[Shiraz (Ray)]

Both good scopes but:

The RC has a long focal length and is not very well matched to your camera (which has small pixels). Sensitivity will be low and on an HEQ5 you will have a hard job getting stable imaging.

The Newtonian will require a coma corrector and at f4 can be a real PITA to get and keep properly aligned - everything needs to be aligned within 10s of microns and the mechanical components of low cost scopes are often not really up to the job. I don't think this type of scope will do what you want out of the box - they can be made to work, but expect to be fiddling with it from day 1.

Sorry to step outside of your options list, but if you are set on a scope in the 200mm class, maybe you can save yourself a lot of headaches and have look at a Skywatcher 190mm Mak Newt. These have a fairly short fl and properly corrected optics out of the box. The downside is that they are pretty heavy - your HEQ5 would be just able to carry one, but you would need to start thinking about a heavier mount at some future time (which you will probably do anyway if you get more seriously into AP). Many astro shops have the MN scopes - they are relatively expensive, but noticed that Andrews has them on special. I have not used one, but they have some good design features, should match pretty well to your camera and reviews have been uniformly positive.

good luck