My parents took me to most of the original series movies when I was a kid, and, after Star Trek IV, I started watching TOS reruns and really got into them; even went to a couple of Star Trek conventions. I was excited for the premiere of TNG, and faithfully watched TNG, DS9, and Voyager during their original runs. I enjoyed all three, though for different reasons.
I didn't watch Enterprise when it first aired--was busy with grad school by then, and ready for a bit of a break from Trek. I finally watched the whole series a few years ago; it wasn't bad, and had a lot of good intentions and some genuinely great episodes, but I found it a bit of a step down from the earlier shows. Season 3 in particular was a slog.
I genuinely tried to watch Discovery, Picard, and Lower Decks, but couldn't get into them. I didn't care for the serialized approach, the R-rated language, and the generally more cynical tone of the new shows. (It's like someone watched Enterprise Season 3 and decided to use it as a model for all Trek moving forward.) I might give Strange New Worlds a try.
So, if I had to pick "my Star Trek," I guess I'd say everything TNG through Voyager: those are the episodes I go back and rewatch most often, with an occasional TOS, TAS, or ENT thrown in.