Just to add to Botto's comments. I've owned high end PI bibs and I recently made the mistake of buying Castelli Kiss bibs (trying to be cheap). I know we're all different, but neither of these come close to the Assos FI.Uno bibs imho.
BTW - That Castelli purchase is going to end up costing me more than just buying the Assos in the first place, because now I have to take the loss of selling the Castelli's on ebay, plus the cost of buying the Assos.