This was my initial reaction- like asking about my kids or grandkids.This is like asking witch one of my kids I love most
But I must say Tabac because it to me appears slicker, and I love the scent
MWF and Tabac are both nice, just very different. Tabac is a breeze to lather, MWF leaves my face a bit better off. I happen to like the Tabac scent, but it is strong for a soap. Over the years, MWF has been a daily driver for me for months at a time and always performed well. I tried a few times but didn't enjoy using Tabac daily for more than a few days. I've found there are better performing artisan soaps made today, but years ago MWF was one of the few readily available here in the US that at low-cost that provided a consistent, terrific, luxury shave experience without having a "big" scent.
IMHO- for one-off shaves, MWF and Tabac are basically tied. As a daily diver MWF would win.