For his absolute best, try Vol. 1, but The Very Best of Otis Redding, Vol. 2 is still Otis: powerful, gospel-style soul-shouting over the elegant backing of his house band, Booker T. & the MG's (!). Despite the B sides and repetitive ballads, purchase-justifying gems include the house-rocking ''Knock on Wood,'' and the mind-blowing (if preposterous) ''Day Tripper.'' B+

