To quote(sorta) one of our more famous members; "I wouldn't put another one of those front end hoppin', contact patch squirmin' Avons on my bike if they gave 'em to me & paid for the mounting & balancing. If ya get a good set, they're fine but I don't have time in my life to put up with their shoddy quality control.
I'm surprised to read this as I have had 0 problems with Avons in 120,000 miles of usage. I've tried 1 set of Metzlers, cupped, badly; 1 set of dunlops, the originals, very poor life, bad enough that I'm not sure I can try the Elite 3's; 1 bridgestone, poor life, cupped.
I love my Avons. The worst problem I've ever had with them is my current set required more weight to balance than usual, but still manageable. I've used the Venoms and the Cobra's.