Advanced Pool is, IMHO, the best read on how to play the game at a higher level. When I read it for the first time about 9 years ago, it changed my game dramatically enough so that people in my league were asking what I had done. That, in turn, got me to get an instructor to work on my mechanics and the results have been terrific. While Advanced Pool is mostly about 14.1 the ideas in it are applicable to every other game. That alone makes it the best!
George is one of those writers who makes you feel that he's standing behind you while you shoot, helping you to see and hit just the shot. I, too, read Tips and Shafts first when every issue hits my mailbox.
George is also a very approachable guy. We've traded PMs over the years and if I ever get to Chicago, have promised to buy him dinner for an evening of playing with the master.
George Fels, you are the nuts!
Brian in VA