Looks to me the only difference is the amount of bend. My preference is for the X220. That big of a pipe will hang much better from your mouth with more bend. I have two Sav Hercules (big pipes), one is a 1/4 bend and the other is a 3/4 bend. I enjoy the 3/4 more because it can hang / chin rest more. I have to hold the 1/4 more because it starts to hurt my jaw if I don't. Nice looking pipe.