There's no comparison, TLB is far superior to PB in membership, knowledge, sharing ideas and every other way. Packlite runs a great ship here.

At PB, if you're willing to kneel at the administrators oracle and acknowledge that he is the font of all backpacking knowledge, that he has all encompassing knowledge and experience and that you are a mere peon who couldn't possibly know anything he doesn't know or have any experience he doesn't have, then you should get along just fine over there.