Ace King, suited or off, is a great hand. The reason for this is due to the fact that if you catch any pair, you have great chances of winning the pot, which i cant say about any other hand other than pocket pairs... If you catch a pair, its sure to be the highest on the board and you have the best kicker to go with it. This is why its considered to be one of the best, some say even better than Queens. Statistically queens win more hands, but you are capable of winning more money with kings since you wont feel as threatened as you would with queens. For example, if you get queens preflop you are hoping with all your might that an ace or king don't come on the flop because you know if they do, the person who called your raise is probably winning. With kings, you are first of all hoping for any of those hands, and you are capable of looking past the flop even if you are raised knowing that if he is bluffing
you are beating him, and if he isnt your chances of catching aren't that bad either... Good luck at the tables .