My 2¢: don't worry about the steel. That's what the knifemaker does for us, practically any modern steel that Spyderco (or any other reputable brand) uses is fine. I have a large Spyderco folder I purchased in 2000, made with AUS-8 steel. People are more than willing to tell me how AUS-8 steel is outdated, doesn't do this, won't do that, is inferior because...
I used that knife as my EDC for, oh, 16 years. I never once sharpened it. I've cut open innumerable boxes; broken down pounds and pounds of cardboard; cut hundreds of zip ties; made more cuts of CAT-5 cable than I care to admit; I've used it to cut relatively thick plastic; in a pinch, I remember using it as a screwdriver.
I finally sharpened it last month for the first time. Took me all of 10 minutes on the Sharpmaker. This week, I touched it up with a leather strop, a leather shoelace, and some green compound. It is back to extremely sharp, sharper than when I purchased it. (Aside from the very tip. I always have a problem with my tip. Once we get past the tip, things go smoothly. :highly_amused: )
There is not a spot of corrosion on the blade. No chips. The only problem my eye can detect is that two of the small teeth show the slightest amount of rollover to the back of the blade; I might be able to hone that out, haven't tried.
The entire knife works fine. Lock-up is great. The action is perfect. Zero blade play.
But that AUS-8 steel...really sucks. /sarcasm.