I've heard that there is a difference between the natural and the red. If so, what is the difference. If the red is worse than the natural, is the difference significant enough that the natural should be used instead. I really like the red color and I'm wondering if the difference is that important that I should use the natural color instead. Another question I will add to not take up forum space. Why is Titan Natural Gut cheap. Should just buy the other natural guts like Babolat Tonic+? If there is a reason why the Titan is cheap, is that reason good enough to try other natural guts instead? Thanks.