Not to brag, but having recently installed two of these, I don't hesitate to call myself an expert on the subject of Shimano Brake Cable Tips. Look for the chronicle of my adventures in digital download and (fingers crossed) a soon to be released books-on-tape version.
Is there a minimum review? They work. I thought about dinging to 4 stars because JagWire includes some pretty cool "gold" tips in their cabling packages, but really, they are cable tips, you crimp them on, and discard when changing cables. They do that just fine.