Fwiw, if anything, I always really, really liked the Kemper UI. Endless pots with proper readouts, most important parameters instantly accessible - just what my doctor ordered, possibly still only beaten by the QC UI, but the click-to-select thing turned me off a bit.
If all you mainly want is amp sounds and quick adjustement options of those amp sounds, the KPA is just great.
Add to this that with their parameter lock functions they've at least done something to adress some issues of the live playing crowd.