Astra SP and GSB for me. Can't decide which one I prefer over the other. They each have the strong and weak points but both are good enough for the dessert island scenerio.
tryablade.com is cool
The three Russians I've tried so far have all been excellent (Nacet, PolSilver, GSB), with the GSB being my number 1 to date. I have a few more to try once my current blade gets binned.
PERMASHARP!!!!!!!!!! The best blades I have ever used