[HELP!!]What modding team to join?

Well, I just got a Social Invitation to join FSP, but hmsl invited me to join DuKu, and now I'm stuck between. I honestly do not know which one to join. If anyone from different mod groups answer so it isn't biased, that'd help. I don't want to make a poll, cuz they can still vote. I need UFB, and lone modders to answer. Thanks. D: I really need help on this.

Join FSP if you want to have a few good friends with cha, and people to back you up.

FSP. Larger member base as I can see. (Active members at least)
And every member that I have seen makes some skilled mod's.