I bought a K11300 2010 250miles on the clock.
Great bike on the tarmac, went like a rocket. Could ride it all day and night, never felt fatigued on it at all.
However, I personally found it very heavy, 300Kilos Dry. Fine on the road but pulling off on a bit of rough I found a tad daunting.
Also the heat from the motor! didn't need long socks put it that way.
For my money the gearbox was dreadful, I used to wince putting it in gear. But there all like that sir came the reply.
And on windy days I was aware of sideways breeze trying to push you off course. Big slab of a fairing, but kept you comfy.
Did 6k on it and went back to a GS.
I know couple of lads with them and they are more than happy. Just not for me, subjective view I suppose.
Cheers
James