Him indoors got me the Bobby Womack one for Christmas - it's a an easy read and very funny. Most of the stories I'd probably heard before but his first hand account of being caught with Linda is quite amusing...not sure how happy I'd have been though if it was my daughter I can't imagine any soul fan not enjoying this as its full of anecdotes about the likes of Sly Stone, Sam Cooke and Ray Charles
I've got the Etta james one, picked it up from a charity shop but only just started that, I'll let you know how it goes!