Spyderco delica or benchmade mini griptillian if you want a small knife (3 inch blade)
Spyderco endura or benchmade griptillian (full sized) if you want a more substantial blade.
The delica/endura are basically the epitome of great, affordable, user knives with excellent quality and blade steel for the price (vg10). They might not be "lookers", but they are a favorite edc knife for MANY very knowledgeable knife users and collectors. Plain and simple, they are GREAT knives that just work.
The griptillian series is kind of the anti-spyderco. They have smaller handles per their blade size which as a negative impact on ergonomics and use slightly lower quality (IMHO) blade steel (154cm), but build quality is very high and the axis lock is absolutely spectacular. Axis lock folders are some of the fastest opening folders around and are a heck of a lot of fun to play with. If there is one real downfall to the griptillian line is that many people feel that the handles feel too cheap and hollow. It doesn't bother some people, it bothers others a lot.
Either way, you really can't go wrong with any of the knives I've listed. Both have steel FAR better than 8cr13mov. Both are tried and true designs. And both were meant to be used. They are the bread and butter of two spectacular knife companies and are an excellent example of very high quality, affordable folding knives. I would go spyderco, I simply think they represent a better value.