I think I am going to stick with the thorn proofs for now, and try the Stans sealant next tube change to try something new. I have had great luck with the thorn proofs, but the first time one of those pigs let me down...it will be time for something new. The next worse thing to riding a thick heavy tube, it finding a place in my Camelbak for it's remains should it ever fail. Thanks for everyones thoughts and recomendations. Keep them coming...