In a side-by-side comparison, the C919 simply outshines the B519 thanks to the beautiful richness and viscosity that has made ECBP such a popular and sought after whiskey. The C batch takes everything in the B batch to another level, and has the classic sweet Bourbon flavors to match the powerful oak and proof inherent in this batch. I bunkered a 2nd bottle of this beauty....don’t pass on this one if your on the fence.....a terrific bottle of Bourbon.