Radamsa is awesome! Definitely agree, and one of the goals for Fuzzbuzz is to be able to hot-swap between fuzzing backends without any interface changes (or to use all backends at the same time, to account for differences in findings).

re: pricing, we do offer infinite scalability in terms of CPUs, but that might not be as clear as we'd like it from our pricing page. Or maybe I'm misunderstanding you. Either way, if you have any more thoughts/suggestions on pricing I'd love to hear it.