One thing I notice about Trek starships is that they seem to become more 'streamlined' over the decades, from the original TOS enterprise through the refit, the D, the E, etc. I definitely prefer the more tall 'naval' silhouette of the earlier ships; they have more presence to me. But that's just a me thing. That said, I'm not clear why they would become more streamlined, as they operate in space. It's not like the evolution of cars and planes, which have to worry about air resistance. And the Borg certainly prove that streamlining in space is completely unneccesary. I guess it's just starship fashion trends?
The Kirk refit (ST1-3, and I guess the A in 5-6) is still the best looking Enterprise to me, though I love whatt hey've done with the earlier TOS Constitution class in Strange New Worlds. I'm such a starship nerd!