Well, we'll see how long this vintage puck lasts me. I am only 7 shaves into it, but I am blooming and loading hard (the last 3 have been with boar brushes). The performance, though, is quite good. I think CBL Tonsorial/Master Barber is better. There are also some modern artisan formulas that are slightly better. That being said, I really can't complain about vintage Williams. It shaves well and leaves my skin feeling nice. Even if this puck lasts me into (or past) March, I am going to enjoy every last shave of it.
Also, the sound of my brush handle hitting the sides of the vintage milk glass shave mug is kinda nice in the morning.