I also have a collection TI Sparticus, Various Dovo's, Koorat near wedge, Hederer, and ML Grifetto. Dovo, Koorat and Hederer all pro honed.
They all give me a great shave but the Mastro Livi Grifetto is in a different league and is my go to razor.
Before I get the 'customs are just for show' I should point out that the Grifetto is not custom made, but an 'off the shelf' razor. I now have three, thanks to my wife's thoughtful present at Christmas.
I usually use a different razor everyday, but it's always the Grifetto's that give me the most comfortable and smooth shave. So that's my Favourite.