Quoted from Jean-Luc-Picard:Great Collection!!!!! Welcome Aboard
DS9 was so under-rated. I really loved it. It took some time for the cast to understand their role/characters but once they did it got soo much better. I had a shot at a bar next to Odo (René Auberjonois) once haha.
I think Voyager was also highly under rated. Great cast, compelling story. More serial like STTNG than arc like D S9 or Enerprise but it had some amazing episodes. Voyager's Borg episodes were epic.
Seven and the Doctor are two of the greatest Trek characters ever.