Not really. BSG quickly established that there's only a few different models, and who most of them were, but many copies of each. There were certainly a few 'surprise, that person's a Cylon!' moments throughout the show, but I think they were all quite well done. (Though to be fair, for at least two of the cylon characters, you could immediately tell they were a cylon because it was a famous actor playing them.)

If anything, I think in the earlier seasons BSG went for more of the 'cylon, human, who cares, they're all screwed up' feel.