When does the awesome start? We're five episodes in and it's pretty good already, not great but MUCH better then TNG and Voyager were at this point. To be honest we were not expecting it to be amazing during season 1, I mean Buffy is one of my favourite shows and the first season and a half of that is basically shit - I understand that it takes some time for shows to fall into place.
Having said that, the characters are very good in this. I like Odo, Quark and that Cardassians Tailor guy so far as well as O'Brian of course. We watched an episode last night about some chameleon character being chased (foxhunting style) which was very good. I'd like to see an episode about Dax. Next episode has Q in it!
If you like it already, especially for the characters - then you'll love the whole thing. From memory its' the middle of season 1 that has some very dubious episodes
The characters are all pretty great in DS9 - there's some I didn't like/get on with, but they all had strong characteristics and traits. There were no vacuous non-entities like Voyager (Harry Kim...he's...um...young? And he plays the Clarinet. And...um....he's an Ensign..)
Fun fact - Garek (the tailor) was originally going to be a one off appearance, but he did so well (and fans liked him so much) that they brought him back. He appears more and more often as the show goes on. I don't think he every became a "full" cast member though.
As great as DS9's main cast/characters are, they regular guest/recurring characters are generally all well developed and acted
Sometimes they have the same actor play different characters in different alien make up in different episodes. If you see "Jeffrey Combs" in the guest stars you're generally in for a good episode He ended up playing two different characters in the same episode at one point
One other thing, I loved the fact that Cardassians were in it! These are my favourite aliens in all of Star Trek, are they in the show regularly?
Yes. Less so at the start, the the political situation with (and within) Cardassia develops into one of the strong plot points of the entire series (without spoiling too much). You'll have met Gul Dukat so far - he's another awesome recurring guest star with a good arc.
Keep us updated on your progress please. Given your questions you seem to know nothing about the series/where it's going - if you can stay spoiler free I really would.