Professor Wong's Most Current Strategy Decision Numbers for High-Low?

Can anyone confirm which of Professor Wong's published strategy decision (index) numbers for the high-low count he considers the most accurate for 6-deck, S17? Using decision numbers between -1 and +6 I see slight differences between Wong's Blackjack Secrets Table 11 (1994 edition, printed 2003) and Wong's Professional Blackjack Table 9 (1993 edition, printed 2004). I grant that the differences are so slight as to probably have de minimus effect; however, as long as I am learning one set from scratch ... Thank you.