Go to the Spyderco web site. You can read the EDGE-U-CATION section to learn a lot about their steels.
I did a survey on KnifeForum.com last year. Just used the steels used by the gurus; there were 50 guys, girls that I surveyed. Here (below) are the steels they preferred in their EDC (EveryDayCarry).


:: Spyderco Edge-U-Cation ::

Go to BladeForums.com; that's where lots of the guys hang out.

VG-10 26
ZDP-189 11
S30V 9
H-1 2
ATS-55 2

I have VG-10 in the Caly3. Cut my finger twice in the first 3 days. I just "touched" my finger to it on day one and brought blood. Honest, it is that sharp.
Sonny