If your 6' 3" tall I think that you would have enough room. It sounded like you might not want to spend the extra money for the NX-200 so I quoted what I thought might help you if you look at the Edit it say's that there is 98 inchs inside of the hammock and that seems to be fine with others on here and other forums.
I would get the NX-200 because I like the extra room that it offers and the newer style material that is being used in it.
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