I use Bolzano in all my Fatip Open Combs and Schone - - Feather in my Parker and Muhle OC's - - and Shark in my Fatip and EJ closed combs (which I use on third pass ATG only). Best shave for me, overall, is any Fatip or Schone OC with a Bolzano.
I have been using astra with my piccolo and it witke fine but then again the work well with any reason that I have tried them with. I am probably going to try bolzano next as I have just gotten some to try.
Bolzano worked well for me using the gentile plate but I used a feather yesterday and it was great. My piccolo costs a smal fraction what my other razors cost but it shaves just as well as they do (and a good deal more intuitively for me) and looks great - the performance and satisfaction ratio to cost is incredible for fatip razors.
I revisit my BIC Platinum blades which i've got from my first and only blade sample 4 years ago and since my Fatip Grande has become my go to razor for the past 2 years, I decided to use them for the test. Usually I use Polsilver SI 99% of the time on every razor and I get great results. The blade is very sharp and mid range smooth. The BIC however was super smooth and slightly less sharper than the Polsilver. I just got my 3-rd shave with the BIC and it was amazing.
It might sound funny, but that blade feels like a sports car on my face. It glide with super ease while it's sharp enough to cut though anything on it's path without any irritation whatsoever. In fact, I didn't even felt the need to use an after shave! I've tried the BIC in my recently acquired Old Type and Super Adjustable and the shaves were decent/ok but nothing impressive or even remotely close to the shaves that i've got with the Fatip Grande.
I immediately pulled the trigger on the cheapest 100x BIC Platinums that I found on the bay and thanks to the 5 pount discount, i've got them super cheap. If I keep getting the same shaves for at least a month from those blades, i'm going to get 1000 and use them only with the Fatip.