I have heard that in Holland 90 % of the heat exchanger gaskets are camprofile now. 10 years ago you could hardly find a few non metal jacketed ones.
Basically, kamprofiles give better sealability. There are some profiles which are supposed to seal even better, like convex or the one with the two teeth slightly higher up to "close" graphite inside. Whatever you choose, the chances are camprofiles will work better.