I own the K6R which is double action only.
it's heavy, but very well built, IIRC Kimber DISCOURAGES you from Servicing or otherwise diddling around inside it.
I can easily stack the trigger, and accuracy is very good given the size and barrel length.
easily handles .357 magnum and isn't a brutal as other small revolves (yea, I'm talking about you S&W 642)
they are expensive at over $800.
MUCH smoother and more refined that the Ruger SP101 which is its closest competitor.