Take it from me, somebody that has always been very particular (almost superstitious) when it comes to tips, that I personally think that Kamui most likely has the best tip out there. The first and biggest reason that I like the Kamui so much is that it has been the only tip I've ever used that I could install two hours before a tournament or serious match, and play without having my new tip in the back of my mind when I need to be focused and without distraction. Other tips that I've used are: Moori, which can vary from batch to batch and all have needed a little time to break in and need a reshape. Snipers: which are a real nightmare to install without a lathe and only get really sweet after they've been broken in well. Molavia: (See Moori).
I won't go out on a line and boast that the Kamui plays better, or gets more spin than all the others. As a matter of fact, the best tip I've ever had was a Sniper, but like I say, it was a pain to install (by hand), and it took me two weeks to get it to what I call 'sweet zone' and the sweet zone only lasted for a month or two. Anytime I've ever used a tip other than a Kamui, I've always made sure the tip was installed and well played before I ever used it in a serious situation. The Kamui for me plays pretty much the same from start to finish.
The videos on the Kamui site are very impressive, but they're more the player than the tip. Any number of those shots on that video can be done with any good tip. (I might add also, that the player in the video can do some pretty impressive stuff, but I know firsthand that he can't run a rack of 9 ball to save his life!.)
dave