I couldn't connect to the emotions of the Voyager crew much at all. Their emotional dilemmas tended to be sitcom-style dilemmas, contrived problems derived from their core gimmicks that they have an exaggerated reaction to out of nowhere then resolve completely in the space of one pointed conversation. Voyager emotions were way too canned and artificial to relate to.
TOS emotions come across much more viscerally and sincerely than in any of the other Trek series. I suppose TNG isn't much better than Voyager in that regard though.
I would consider Odo the most emotionally relatable character outside of TOS, by a long shot.