The Bilstein will have higher build quality. They will likely have more sophisticated valving and though I don’t have a direct comparison likely better ride.
The KYBs will be fine too, but they just aren’t in the same quality league as Bilstein. I’ve run KYBs on a Camaro, Mustangs, the old Ford Truck, a couple Volkswagens. Bilstein on multiple BMW’s, Volkswagens, and a Crown Vic.