Probably should have done a poll, but I think its space easily, even if its just based on the opportunity is rarer I would imagine.
While I wouldnt mind either, the whole blasting off seems like it would be fun to travel that fast, and the weightlessness and views would seem to be amazing.
My curiosity for the deep sea stuff is there, like I want to know whats down there, the experience overall just seems like it would be worse. Cramped, not much visibility etc