Hi Rex
You might find it helpful also to play with a freeware application called
CCDCalc. It lets you visualise what sort of FOV you can expect for certain scope/camera combinations. There really is no such thing as the best universal image scope. If you're starting out might be an idea to keep your focal length under 1 metre to make things a lot easier though. Keep in mind too that the "speed" at which you accumulate photons is proportional to the square of the focal ratio. e.g. an f/5 scope will pull down light twice as fast as a similar f/7 OTA.
There are all sorts of pros and cons to consider for which others here will hopefully share their experience.