Of what I own:
Attolini- is my favorite as the silk of all of them are quite exceptional.
Borrelli-their 7 folds ties are one of the easiest and best dimples I've found
Ricci-despite their poor taste in other garments, Ricci's ties are quite nice
Kiton-suprised as I'm not very impressed, the materials are not of Attolini's quality