Thank you, Yair. Actually I know Alessandro, he is terrific: professional and kind, he already loaned a Phase-One/Leaf Aptus II 8 to me last year; his office is 1 km from my house (P1 40km, Hasselblad 15 km.). What is complicated is to collect the three of them (and two shimmed Alpa backs: one for the P1/Leaf family, and the Hassy one) for a week-end test.
That's the reason why I would have been happy to find some info, comparison and resources on the web. Ciao, Diego