Renzy has an extremely readable writing style. Its like Ron Popeil selling you counting, while Wong's book is like Mr. Spock. He puts out easy to understand numbers... if Griffin's book reminds you of AP Math (5^6-[9] 6), Renzy says it like this: 6 to 1 underdog. Now, even though I prefer Hi-Lo to KISS, this is definately a worthy read. His condescending attitude towards stupid players is entertaining enough as it is, but his hand interaction section and straightforward yet colorful descriptions are nice bonuses. One of the few books I would recommend for beginners too, as he explains WHY hands are played incorrectly, not just how.