Have not used the kramer yet.... I know I know....
those three knives are probably the most flawless knives I have owned, as well as the shigefusa. All of them are extremely different though.
The carter is a bit beefier than the others, but tapers nicely.
I was just using the Rader at work and it is a fun knife. The handle is beautiful but a bit small for my hand. Great edge retention, and pretty thin. Also very little reactivity during use compared to my other carbon knives.