I am only using MWF for the rest of the year with the exception of Saturdays which I reserve for trying new products or reviving an old favorite for the day.
Having tried NONE of those soaps, I can't say my vote carries ANY weight, however, I voted for the MWF. It is first on my list (many close seconds!) of items to purchase in Europe when my sabbatical ends next summer. I do love the scent of Sea Buckthorn (whiffed a sample of it), but I'm afraid you'd come to hate it after a year of using it!
While MWF & Tabac are great soaps, you cannot go wrong with DRH Arlington. It has a very agreeable scent and it always provides a great lather for me. Plus, it is plenty moisturizing for me. While I use MWF and many of the others listed on a fairly regular basis, I always turn to Arlington about 2-3x per week, and it is the only soap that I travel with.
With out any knowledge of you complexion I voted for Tabac. Tabac and MWF are clearly the top two in your list but if you have a oily complexion, like I do, MWF would be a bit much on a daily basis. I admire your determination to use only one soap for the rest of the year. I can't seem to use the same one for more than two or three days.