My experience with allot of the Tiger tips and allot of others - is that the feel great for the first week but then they hard up and the second week they just hit really hard, and don't hold chalk as well, and glaze over. I find that I have to use a tip ***** on it after to get it to grab chalk again.
The only one that I don't mind from Tiger is the Everest, for some reason this tip tend to stay pretty consistent.
But Stick with the Kamui - a more consistent tip, and it doesn't change that must over the initial break in period.
I have some Ultraskin on order, can't wait to see what the fuss is all about.
not sure if I helped at all but good luck with your decisions.