What is the better Star Trek pilot? Encounter at Farpoint or Caretaker?

If you could only play one of these game systems for the rest of your life, which would you choose?

Which mantle, which is usually one person, works better as a legacy character, i.e. Green Lantern?

Vintage game collectors: retro is expensive right now. Are you currently buying or selling games?

Which is (so far) the better series about this iconic duo?