Lots to think about now, perhaps I was a bit hasty naming this thread "Decided on a Nikon"
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I know its probably a dumb question but as a generalisation will all DSLR's have a fast enough shutter speed to capture a fast moving RC car assuming use of the correct lens of course.
Thanks for the info about Jessops by the way. I know its probably an unfounded worry but I shy away from online shops when its an expensive thing I'm buying. I like the "take it back" factor if I have a problem, and most shops in my experience will try to get as near to an online price as they can so its not such a deal breaker these days.