Ok, here are swatches of Bing and Kirsch. I'm an NC 40.
Bing + Vino lipliner
Kirsch with Soar lipliner
They may not look that different but Bing is much more pigmented than Kirsch.
Bing is more of a grape color and Kirsch is more of a burgundy/wine color.
Kirsch I think, is more wearable but Bing is fierce! I love it!
Sorry if it isn't well blended, I was in a rush! hahaha...
BTW, the stain that these two leave on your lips are so pretty!