Kav, you're right the bets are not entirely equivalent. But I find that because the progression is calculated for at least 1 hit in the 6 spins, it often happens that you get a couple of hits within the cycle, which makes up for not recovering the total prior losses on a single hit. As you know, there are always trade-offs when considering any MM scheme, and I prefer to err on the side of caution. I prefer something more like a D'Alembert. The marty is too aggressive for my taste even when stretched out in this way.