Personna Red in a Gillette Sheraton. WOW, great combo, and on day 3, still no signs of giving up. This is why I have trouble throwing away blades after just three shaves!!
About the Feathers -- they always suck on the first shave and then get smoother as you go along. I think there's something about their sharpening and coating process. The blades actually need to get a little bit dull to become comfortable on your face.
Polsilver Super Iridium, second day. For me, these are good for three shaves, OK for a fourth. Haven't pushed it past that. That's the case with most blades I've tried, except for a Personna Med, which got me through five very comfortable, clean shaves.