1. Polsilver SI
2. Gillette Platinum
3. Gillette Silver Blue
Still auditioning for 4 & 5 - next up is Perma Sharp, but I'm really happy with #1 and #2, and would be happier with GSB if they didn't have the massive glue blobs.
Revised top 3:
1. Polsilver SI
2. Perma-Sharp Super
3. Gillette Platinum (which is best in the Krona that I use when on the road).
I have now dropped GSB from the list (not as smooth *for me* as the others).