Traditionally you would choose the one that is associated with your own family name. Unless of course one of those is Barclay, then you should choose that one.

Are you looking to join the clan society? There is nothing wrong with belonging to more than one society, other than it can get a bit expensive paying all those dues. And if you are planning to be active in the clan, it could become a chore to be active in all of them.
What you get out of this depends upon what you put in. If your ties are not of your own family name, and you had to choose one, then I would choose the one that's activities fit what you are looking for.

Best of luck.