Yeah, I enjoyed the special features more than I expected on this actually. The In Conversation one was very good, very interesting. Really got to see the creators honest views on the show, it's mistakes, it's achievements, the actors, the higher-ups at Paramount, the infamous theme song, etc. The interviews with the cast/crew were great too. Dominic Keating had a very entertaining story about his casting audition! Love that guy... I haven't listened to the new commentaries yet, but look forward to them.
The video quality is a nice upgrade, but yeah, not as big a jump as TNG. I only bought Season One because I saw it ridiculously cheap (it was a pricing error, in fact), but it impressed me, so I plan on picking up Season Two, as long as it isn't too expensive.