I hate to admit this, but I have never tried Cella. I have only used Antica Barbierria Colla De Franco Bompieri once, but on first blush, I prefer it to P. 160 Tipo Morbido {I would need to do a side-by-side test to say for sure, but I'm pretty sure). I can say it is very nice and I wish I had more than 100cl (whatever amount I have).
This morning's shave soap......Nothing, unfortunately was up way to early to get work done so had to skip the morning shave. On the plus side by this afternoon when I'm done I will have more stubble to mow down!