Stop trying to cause controversy
Then again, I suppose a professor's job is to stimulate thought. adhoc has never used KO, although I considered Red Seven, which could be seen as a TKO. I started with Braun's plus-minus count, the moral equivalent of Hi-lo, briefly went to a three-level brain-teasor which cost me headaches and probably money, retired from active card counting for many years (had no time) and then adopted Snyder's Zen when I "re-activated" in about 1982 or so, after concluding that the amount of time I would devote to blackjack did not warrant a very "advanced" system. I looked into Wong's "halves", but beat a hasty retreat when I learned that it required more work than simply counting half the cards. For years I harbored a small amount of irritation over this blatant misrepresentation by this giant of the game. I got over it, accepting that "giants" of anything are afforded extra slack. Besides, he is otherwise a very nice guy.
Although I'll admit to briefly considering the Red Seven, a kissing cousin of KO, I decided I was just way macho to be using what appeared to be a wimpy count. ;-) Although it became first politically and then mathematically incorrect to criticize unbalanced counts, I still enjoy doing so if I think I can get a rise of a friend who uses such a seemingly feminine-sided affair to play what is, after all, decidedly a man's game.
I know nothing of math and am at the complete mercy of guys like Mathprof, Wong, Reid, Schlesinger, ML, Carulco, Houdini, Bernoulli, John Patrick and countless others to provide steerage. I list these names in no particular order of stature except of course to curry some future, as yet unknown favor from MathProf, who appears to be an easier mark than the other live ones. My strategy has been to wait until 90% or so of the wizards agree it's a good deal before I strap it on.
for the most part in jest,
adhoc (aka the balanced one)