Can someone explain to me what the purpose of these companies are? We've been operating for a year now and haven't joined either of them. What are the pros & cons (if any) of becoming members? Surely the main place to go for a customer to check out the credibility of a company is the CAA website which lists all the qualified companies? I seem to see their name tweeted a lot and was just curious. Is it worth while joining them both, what's people's opinions?