I got Cella, MWF and P.160 last week and so far have only performed one test run with each.
Briefly on: Hardness // Scent // Lather // Efficacy // Moisturizing these soaps go as follows:
Cella - Soft // very light almond, almost as if you cannot feel it // great // cannot comment yet // cannot comment yet.
P.160 - Soft to Medium hard // fairly strong almond // good // cannot comment yet // cannot comment yet.
MWF - Hard // uninspiring, like an ordinary soap // cannot comment yet but you need to work on it hard // cannot comment yet // cannot comment yet.
Other than the expected camera WB influence in the shots below, this should give you a fairly good look of the colour each soap has.
From left to right: P.160 // MWF // Cella // Acqua di Parma. Bottom center: Tabac.
From left to right: P.160 // MWF // Cella // Acqua di Parma. Right center: Tabac.
Cella and AdP:
Top row: MWF // Cella. Bottom row: Tabac.
I cannot say I am thrilled by any of the three yet (Cella, P.160, MWF) based on what I had read, but perhaps they'll start to grow on me as time goes by. At the moment Cella has my preference. Have not tried the Tabac yet, that one should be quite good, used to use the shaving cream when I was a teenager...