Kef LS50 vs. Emerald Physics CS3 mk2

I'd be shocked if more than a few people have heard these heads up, but that's what I'm narrowed down to on paper. Any thoughts/opinions? The Kef's I plan to go audition, the EP's prove a touch more challenging to hear... I lean towards a warm rich tone w/ fast dynamics. Music tastes tend towards jazz/blues/classic rock.

Supporting gear:
Dual Rythmic Subs
CJ ET3
W4S monoblocks
PS Audio NuWave DAC

Current Speakers PSB Stratus Mini's

Many Thx!