Personally, same poundage, low 60s for everything. Most of the dedicated target guys are right around #60. I think that is a good number for most guys because of the volume of arrows they are shooting for indoor.
I would try to get my hands on a couple different thumb releases if I was in the market. See which one felt the best. Ultraview offers plastic molded replicas of their releases so you can see if the fit is right for you before committing.