Certainly Purple's best song, Tigger. Many say SOTW, but not I. I do have to say that, imvho, Dave Gilmour's solo on Comfortably Numb takes some beating.
Nah, i'm a bit of a Genesis snob, Jim. Think Gabriel took them down completely the wrong road, going all commercial. Yes, they've made zillions but for someone who 'didn't want to be the lead singer', Collins couldn't grab that mic fast enough ;-/