TPM because everybody I know rides with them, more or less.
I would like to give another club a try however, to see what the environment is like and how they run things.
Overall I am happy with TPM, but there are some things I am not thrilled with. Without anything to compare it to, I have no clue if better or worse than other clubs, other than hearing opinions (usually from TPM members).
I will say that I do remember being disappointed with the 2006 schedule compared with the 2005 schedule, and even more disappointed in the dates of this years schedule.