Hi Donk
my two cents... I havent had PC Especiales yet, but Mille Fleurs are great cigars, can even stand proud compared to standard Partagas PC I have smoked, considering a far lesser price.
I am aware that there is a slight difference in size in favor to the PC Especiales, but how much difference do you think will that extra millimeter of thickness have on taste? Negligable in my opinion. Remember, we are not comparing a panatela to a robusto here, where the actual filler quantity and composition can have its merit on taste. If these two cigars, more or less both petit corona sized, would considerably differ in the filler composition, then the Habanos S.A. would probably have a hard time achieving that "partagas" taste one would associate with the brand. Plus, they are usually on the same level in retail, pricewise, which leads me to believe they are similar cigars, both in size, tobacco treatment (age, fermentation, quality,...) and composition.
So, I am more than satisfied with Mille Fleurs and would only consider buying PC Especiales if the price was the same or lower compared to MF and/or I couldnt get MF.
Rob