Best set of IEM's I own, period.
I've been using these IEM's for over a year and a half, and they go literally everywhere I go (I've used them so much the red anodizing on the casing have started to wear down). I use them for music on the way to school, on the airplane during flights, and on my bike when I go exercising; they sound so good, I cannot compromise my sound quality no matter what activity I do when listening to music. I currently use them with an Earstudio ES100 clipped to my belt/pocket, and they act as a "wireless" IEM setup that I do not have to physically tether to my iPhone.
I've preferred IEM's in the past, and before this pair I used to use the Massdrop x Mee Audio Pinnacle P1 IEM's. Those were also great, however the Kaiser 10's soundstage blow them out of the water. Everything sounds clear, crisp, and it feels like the artists are singing literally right in front of you. I currently use Comply Foam Isolation 500 medium tips, and they feel great.
The price investment is huge, however I feel like they are 100% worth the money. In the far future perhaps I will invest in a custom set of Noble's IEM's that use the Kaiser 10's internals.
Would recommend to a friend.