For my iPhone 5s, I really liked my Spigen case that had sharp chamfered edges on it. For me, it gave a great grip in my hand due to the edge. This is the one I had for my 5s: http://www.spigen.com/brands/apple/iphone/iphone-5s/iphone-5s-5-case-ultra-hybrid.html For the iPhone 6, all cases and bumpers I have seen are rounded to conform of course to the 180 degree rounded edge. Are there any iPhone 6 cases out there that perhaps thin the center portion or create a "squared" or chamfered edge? For me, I think it would provide a better and more secure grip than rounded. Thanks!