As most people on here currently debating what sounds like a fairly major plot point of Farscape with no end in sight, I think it's fairly obvious that the OP should choose B5.
I don't know. That depends on how much plot matters to you. There's also character, setting, mood, humor, visuals, music, dialogue . . . .
If plot was all that mattered, then reading a synopsis would be the same as watching the show!