I've been using the Renaissance wax for quite a while for both my shafts and cue finish with great results. A while back there was a thread touting the Guitar polish and IMO there is no comparison. The Guitar polish is oily and while it does polish up nicely, it is no better than the wax. Also there have been concerns of silicones in the polish, I don't know for sure, but why risk it. I think if you read about the wax in the link below, you'll see what I mean. If someone wants the polish I'll ship it for 10.00, used one time.
http://www.restorationproduct.com/renwaxinfo.html
http://www.restorationproduct.com/renwaxinfo.html