If you choose the King Diver package it is not the same as diving with Martins regular divers. You get their best dive guide, a separate boat, steel 95's, and most certainly dive more advanced sites including the other side of the island. You'll go out with only two or four divers even if only two or four sign up for that package. I spoke to Martin himself about these trips myself in person last August. A LP steel 95 holds 95 cubic feet of air or Nitrox at 2400 lbs. When they're overfilled, they'll have more. An aluminum 80 needs 3000 psi to have 80 cubic feet of air. Another benefit to the steel 95 in addition to more breathing gas is their weight allows you to take 6 to 8 lbs out of your weight belt or integrated weight pockets. Both Alum 80's and Steel 95's tanks have yoke valves. The cost for King Diver is $70 for two tanks, and DWM is $50 for two tanks using air. I intend to try some of these sites on my next trip and will certainly enjoy the extra Air/Nitrox AND weight of the steel tank. Orlando is the dive guide that you want to get. Talk to Martin himself. He's got some interesting places to dive.