I only use DE once in a blue moon but managed to get my hands on a BBS1. I used a Feather blade. Wow. Very smooth shave, zero sting from alum and yes, BBS .
Gillette Slim Adjustable with a Vikings Sword (4) for the left side of my face and an Israeli Red (4) for the right. Fourth shave comparing these two Israeli made Personna blades and again they performed excellently, couldn't pick a favourite!