I'm not knocking the Thinman risers as a lot of people like them, but in pictures I didn't like the way they raised the bar. It may be more comfortable than then Kewlmetal risers I have but I don't know.
One other thing to consider with the Kewlmetal risers is when the bars come back and down, it changes the angle of the controls on the bars. Some guys are fine with that and some aren't. I wasn't. I had to reposition my controls. It's very easy to do and there's two different ways to do it. When you remove your switch housing you'll see a tab that fits into a hole in the bar that keeps the controls from sliding around. Some people file those tabs off and others, like myself, drill another hole in the bar approximately 1/8" from the exsisting hole and use that hole. It works really well. It's real easy and shouldn't keep you from getting the Kewlmetal risers. Just something to keep in mind.
I'm please with my setup with the kewlmetal risers.