Voyager, has to be, not because of the storylines and stuff, I just like the Intrepid-class design, it's layout and the interiors, very nice. Yes, I like TNG a lot (as that was what got me into Star Trek), but most of the time the stories were predictable.
As for the Movies, First Contact, absolutely brilliant, seeing the first warp ship, the Phoenix, Zephram Chochrane as he actually was (not some saint who saved humanity from self destruction, but as a drunk who was more interested in money than salvation), and, seeing the all-new Enterprise-E, Sovreign-Class, similar shape to Voyager, but bigger, much bigger, and like Voyager, there is no "neck" between the Saucer and Stardrive (or Engineering) sections which give the both of them a nice sleek look about them and say "Look at me, I can shift like 5h1t off a stick and I can beat the pants off the Borg anyday" to me (well, they don't literally say that, it's just the shape and stuff that gives you that feeling that it would say something like that), plus those big Nacelles, they're niiiice especially with the red swirly patterns on the Bussard Ramscoops (the first 'Trek to have an animated Ramscoop since TOS)....
Can you tell I'm a Trekky???