I need advice from those who can offer it: Which CD should I buy? 1)Who's Zoo Two 2)Eternal Mods - The beginning of a 1968 concert, and then from the middle of Tommy to the end of a 1969 concert. 3)A double CD of one of the HOB shows last year I'm on a tight budget and need help! Please respond quickly, I am out of town and they will only be available to me a few more days. Thanks!