I'm pleased that you have found soaps that work for you. Your impressions of soaps, though, is dependent on your individual face, skin and beard. What works for you may not work for someone else.I've used MdC for over 10 years. It was the darling boutique soap of B&B from around the beginning of that time primarily thanks to @Marco's extensive review. Unless you're married to their family or have some other sort of sentimental attachment, its performance has been far eclipsed by modern artisanal soaps.
Thanks to @RayClem I've on boarded some of his top tier soaps and what they achieve is beyond the basics of what any good shave soap is in their rapidity in quality lather development, higher level of razor glide, cushion and superior post-shave moisturization to the point of a making a dedicated after shave product or moisturizer redundant for ME.
As for shave economy, if you just use the soap and dial in loading for your intended use you can get a lot of shaves out of a tub and also not have to have a aftershave product provided your skin is okay with that.
Beyond the soaps @RayClem listed, what others provide rapid quality lather building, super slippy skin, cushion for the razor, excellent post-shave moisturization AND doesn't contain any regulatory-banned ingredients?
I've used a bunch of different soaps, from inexpensive to expensive, artisanal and non-artisanal. Some artisanal soaps I've tried seem to leave my skin feeling too oily. MdC, MWF (tallow), Canada, WSP Formula T and Rustic, SV, CRS Tub Creams plus some other similar soaps/creams provide me with plenty of slickness and cushion while still providing me with a wonderful post-shave face feel - very clean and refreshed.
My advice to folks looking to expand their knowledge of soaps and creams is to get samples from a variety of (artisanal and other) manufacturers and see what works best.
With shaving stuff, personal experimentation is the best teacher.
Just my opinion.