Other than TOS, I've never had a mental database. But for me there's TOS, then a quantum leap over or down to all the others, though I do like them. DS9 would be my next fave and I've only watched it twice through; once on-air, once via netflix. No way you're gonna accumulate a database like I did watching STAR TREK 5 nights a week on WKBD, Detroit! What a great childhood. Bugs Bunny on Saturday mornings and Wizard of Oz once a year. Back when some things were still special. Remember the percussion music and swirling logo on CBS announcing a "special"? Before you could watch Charlie Brown Christmaas in August on dvd. We're richer but poorer in so many ways.