Hi Charlie,
The best scope is the one that shows you the most stuff. The scope that shows you the most stuff is the scope you use most often. The scope you use most often is the one that's easiest to carry, easy to set up in the dark, easy to point, and easy to look through. It's also the one that doesn't make you sigh every time you think about doing any one of those things. A stable mount is very important, and whatever aperture you get, it'll never be enough. It also depends a bit on what stuff you like to look at, but the usual advice for beginners is get binoculars and a good star atlas first, and then get a dob, getting the biggest you can comfortably carry. Nine times out of ten that's probably the best advice.
But think: do you also want a scope you can use for terrestial viewing sometimes?
Oh, and never sell your binoculars.
Cheers!
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