But despite the fact that I have 350 PolSilver blades left, I've been around long enough to know I can't pick anything to be a favorite for the rest of my life.
So far I've only really tried one blade from my pack of samples! But I'm pretty happy with it, so for now it'd be Astra SP. This may very well change in the future.
Gillette Super Platinum Blues were my for life blade, of course they got discontinued as soon as I finish my first 100. I am hoping Polsilver fills that emptiness.
I still like both of those blades, but in the two months since I posted this, my preference has changed. It would now be a Feather, loaded in my '70 Super Speed.