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Mike has summed it up.
Cost is a big factor. RC designs typically prior to the GSO scopes are mega expensive and also require a beefy mount as they are heavy.
Newts have short focal length for their size and have bad coma unless you have a good corrector. If you want to use a Newt with a large camera like Mike's then you are back to mega bucks.
GSO RCs judging from images posted in this forum would be hard to beat for imaging by a Newt. But there are also lots of nice Newt images as well. But they will be more widefield generally. The RC gets up close.
If you are new to imaging the RCs long focal length will be a liability as all the tracking errors get magnified and it will prove to be very difficult.
Shorter focal length is always the best way to start so you can have some fun without getting frustrated by the tracking errors.
Of course if you spend megabucks on an excellent mount then this is less of a problem.
Mount is more important than the scope.
A really good mount will make a really cheap scope take good images.
A really good scope on a crap mount will not produce good images.
I take it you already have a mount? If not ask the many experienced people here about what is a good mount and your price range.
Greg.
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