Texas Hold'em Hand Groupings

Below you will find two different Texas Hold'em Hand Groupings. The hands are listed in groups from strongest to weakest. Also within each grouping, the stronger hands are listed first so in Sklansky Group3, 99 is supposedly stronger then AQ. The first table here is taken from a book called, "Hold'em Poker For Advanced Players" by David Sklansky and Mason Malmuth two of the foremost writers on poker theory. These groupings are widely held to be true. Sklansky Hold'em Hand Groupings: Group 1: AA, KK, QQ, JJ, AKs Group2: TT, AQs, AJs, KQs, AK Group3: 99, JTs, QJs, KJs, ATs, AQ Group4: T9s, KQ, 88, QTs, 98s, J9s, AJ, KTs Group5: 77, 87s, Q9s, T8s, KJ, QJ, JT, 76s, 97s, Axs, 65s Group6: 66, AT, 55, 86s, KT, QT, 54s, K9s, J8s, 75s Group7: 44, J9, 64s, T9, 53s, 33, 98, 43s, 22, Kxs, T7s, Q8s Group8: 87, A9, Q9, 76, 42s, 32s, 96s, 85s, J8, J7s, 65, 54, 74s, K9, T8, 43 The second table here has been floating around and it was part of someones research project their senior year. They did a number of tests that proved that the Sklansky table was good, but needed improvement. Modified Hold'em Hand Groupings: Group 1: AA KKQQ JJ AKs Group 2: TT AQs AJs KQs AK Group 3: 99 KTs QJs KJs ATs AQ Group 4: A8s KQ 88 QTs A9s AT AJ JTs Group 5: 77 Q9s KJ QJ JT A7s A6s A5s A4s A3s A2s J9s T9s K9s KT QT Group 6: 66 J8s 98s T8s 55 J9 43s 75s T9 33 98 64s 22 K8s K7s K6s K5s K4s K3s K2s Q8s 44 87s 97s Group 7: 87 53s A9 Q9 76s 42s 32s 96s 85s J8 J7s 65 54 74s K9 T8 76 65s 54s 86s