I watched some of the same videos, I remember he said to look for the older machines with single line- no bonus type. Double Diamond, Pinball, Top Dollar. And to play dollar demon at max bet-like Top Dollar $5 denom at 2 credits $10 a spin. To grow your bankroll, then scale to the games with bonus', and pocket your winnings. And at the end of the day at the casino you can move to penny slots with 50 pay lines, bonuses, cartoons etc.