I'm probably not the best person to be giving advise on the subject, but it looks like they have a decent selection. I only skimmed through the lists though, I didn't check the alloy breakdowns. It really depends on what your heat treating capabilities are. If you don't have access to a controlled furnace, you may want to look at the AISI 1075 they have listed. A lot of us starting out use 1080 series, but I didn't see any. It looks like they have O1, W2, L6 and a number of other steels, but the heat treating process needs to be more precisely controlled than what you can do in the forge. Look around some of the other pages there... the only steel I saw on the page you linked that was common in knives was 440c, but it's usually not forged, and it does require a precise heat treatment to harden properly.