I guess it's all a matter of opinion. Spydercos are certainly fine knives. I don't like the way they look. As far as blade steels, AUS8 is a very good knife steel, as is 440 (real 440, not the Chinese knives marked 440). I know this from working with the particular steels. There is a new super-steel in the knife business every 2-3 months. Some are very good, especially for a particular purpose. I have found none appreciably better than 1095 or 01 at edge-retention.
The original poster asked about a knife similar to his lost assisted-opener. The SOG fit the bill rather well, so I recommended it. I didn't recommend it because I carry one. I carry one because I think they are great little knives. Could I make a better one? You damn betcha, but when these are available so cheaply, why bother? They stay sharp and are easy to sharpen when they get dull. They work well and are durable. The Spyderco does all these things, too.