I was a bit of a latecomer to Trek compared to the hardcore geeks in my class; I really discovered TNG around the time when late S2/early S3 first aired here, before that I had only once or twice zapped into a rerun of TOS or one of the bad, early eps of TNG's S1 (I definitely remember seeing the first appearance of the Ferengi - fur-clad, monkeyishly bumbling around and making stupid noises - when the show premiered, and finding it utterly ridiculous then).
From when I did catch on, however, it was and remained definitely TNG for me... absolute Data lover here, and Picard simply is The Captain. (I wanted to slap a guy hard who said about a year ago that "the captain" was doing WoW-commercials now. No he didn't, the guy with the toupet does WoW commercials, The Captain did Pontiac in the late 80s. 😀 ) And knowing my fetish, it will come as a surprise to no one how big a crush (no pun intended) I had on Beverly. Great looks and always the conscience of the crew.... only bad thing I ever have to say about her is that she's the mother of that one. 😉
I still got all of TNG and DS9 on taped-from-TV VHS lying around here... DS9 had great times in its run, but it also had periods when it just was just WTF. (Two words: Vic Fontaine.) Odo, Quark and both Daxes rocked, of course, and O'Brien - who had been great on the Enterprise already - finally got enough screen time to shine.
I also watched every ep of TOS (except "Patterns of Force" - still to this day never shown on German TV), but coming to that series after TNG I found it sort of meh (except for Spock and Scotty, of course... but I could so have done without Shatnerkirk.) The horrid German dub of course didn't help either... back in the 70s, it was in many ways even worse than today, hard as it is to imagine.
Now Voyager... I was excited when it started, had been looking forward to it very much, esp. since my beloved TNG had just ended. Sadly, I was disappointed; while the Doc and Seven were great (yep, that's my ship 😉 ) and, within limits, Tuvok was interesting too, the rest of the cast just didn't do it for me. (Actually, when Caretaker first aired here, full page magazine ads showed a grinning Neelix saying "I'm better than Kirk, Picard and Co." Erm, yeah, right. Hop along now.) I still taped it until S4 or so, more out of stubbornness than for really liking it. XD
About Enterprise, the less said the better. I tried to watch it and made it through three eps or so. In comparison, Voyager was still brilliant. 😉
Now the movies... I'm a staunch supporter of the even-odd rule, lol. My clear favorite is First Contact, the utter stinker is Final Frontier - which sucks even more than the non-prescription alternative to a sleeping pill that is The Motion Picture. The best of the "odds" (Generations, Insurrection) still rank below the worst of the "evens" (Nemesis).