ToS isn’t good. It was decent for the time, but it’s not good.
TAS, see above but for kids. Think the Scooby-doo show from the 60’s.
I liked Enterprise when I watched it on tv, but not a lot of people liked it.
Other than SNW the new Trek shows aren’t really “core trek” either. They each have their own style which appeals to different people.
I wanted to like Discovery, but it seems to want to be a CW show about 3/4 of the time. We made it through the first two seasons and stopped. Picard: I also wanted to like it. He’s my husband’s favourite captain after all. I burst out laughing when Dahj is jumping around like a superhero in the first episode That’s as far as I got. Lower Decks: Not a fan of the adult-comedy-cartoon genre. Prodigy: I am not in the right age demographic.
For a new watcher, especially a young one, Strange New Worlds is probably the best start. It has a lot of the classic “Trek” philosophy going on, but paired with modern production and special effects, and also paired with more modern treatment of female characters.
I love The Next Generation, that’s “my Trek”, but certain things haven’t aged well.
I’ve been watching Babylon 5 for the first time (didn’t see it when it was actively airing), and while it’s not Trek, it was produced in the same era as TNG, Voyager, etc. and I find myself jarred by certain ways they portray characters, esp. female ones, and that same sort of stuff is present in older Trek too. Like, Crusher and Troi got absolutely cheated when it came to great arcs and such. Strange New Worlds handles its female characters much, much, MUCH better.
The Orville feels like a very good update of TNG at times. They deal with a lot of cultural drama with analogs to our current society. And upping the humor a bit helps.
Yeah but then Kelly gets kidnapped by the superstitious aliens who believe in starsigns, and Seth’s immediate reaction is to fly down to the planet and call them stupid for believing in religion. Because that’s totally how you solve diplomatic problems while displaying respect for diverse cultures.