It has been said before, and bears repeating - it all depends on what is important to you. Is is star gold qualification? Then AC will get it at a lower threshold. Are upgrade certs in Australia important? Then AC is a very poor choice. Are you planning on travelling enough to make highest tier? All the programs have their advantages and disadvantages, and are best compared on an individual basis using Blondebombers chart referenced above. None of us knows enough about your situation to make that decision for you.

Good Luck, and happy travels!