A series with good characters, good stories and good continuity.
Continuity with what? The original Star Trek series, or the modified versions of that continuity which existed in the various spin-offs (i.e. TNG pretended the TOS episodes with androids never happened in order to make Data and family unique, Voyager slowed down warp speed rendering many TOS and movie adventures impossible, Enterprise ignored TNG's version of Klingon/human first contact etc)? We're at the point where it's impossible to adhere 100% to whats come before, since they all conflict so much about almost everything.