"Redemption," but neither were worth a two-parter. I just like "Redemption" b/c of Captain Data... and we get to see Denise again.
I keep wanting to compair aspects from the different series, but that would be quite off-topic and would possibly lose some people as well. TOS forum gets NO activity, so maybe we could spread it out over there... just a thought.
"Elementary Dear Data" or "Ship in a Bottle"?