I'm going diving in Cairns. I'll be taking one of the affordable, better value liveaboards close to Cairns (yes, I know all about Cod Hole/Coral Sea and am not interested so please don't post suggesting it unless you're going to pay for it) and am wondering if anyone can recommend Deep Sea Diver's Den vs Cairns Diving Center. They seem to be the two pre-eminent boats. I'm looking for good diving and a good time. Other suggestions are welcome also. Thanks.