With Rom you could argue that he's just doing his best to act like a "traditional" Ferengi in season one. Then, as the series progresses, he becomes more comfortable in his own skin. Of course, the truth is - the writers just took the character in a different direction and didn't bother trying to match it up with his early outings.
is definitely one of Season One's high points. I don't think it's the best, but it's up there.
There's a lot more substance here than I remember from my last rewatch - Emissary, Past Prologue, Captive Pursuit
and now Vortex
are all quality episodes. And of course, the end of the season offers even more. Hmmm.... maybe Season One isn't as bad as I thought. It not like TNG's first season, thankfully.