I like the Reliant design and the Defiant from DS9
Whoa, you actually like something that isn't from TOS?
I think I'm gonna faint!
(I kid, I kid....
I think the Reliant
was a good piece of design that basically followed the FJ approach (rearranging and cannibalizing parts) yet added other elements that made it distinctive and appealing in its own right. As it a result it doesn't come across as a rip-off, not to me anyway. DS9's Defiant
is another good design that still utilizes the ideas of a saucer and nacelles, but does so in a fresh and creative way wherein they're almost unrecognizable.