Thanks for your reply! The reason I went for the CDC is that, based on tests from several different sources (for example, Dutch bike manufacturer Santos) the CDX parts wear out 2-4 times faster than the CDC parts. They speculate that one of the reasons Gates started with CDX was that the original CDC lasted too long; in other words, they were so durable that they didn't sell enough. This is the reason that Santos, to this day, has not adopted CDX yet: they don't want to sell an inferior product. But if it's true, like you say, that the belt comes off more easily on the CDC sprockets, than I would certainly have to rethink this; a belt coming off seems to be more of a problem than it staying on but having to replace it now and then
