If you do look at the Ontario Rats, they have them now in D2 which makes really really great blades.
skip the CRKT< the Bucks< and the Gerbers unless you find one that is not the 420 -440A grades of steel that are now common from these once respected makers. They can still make good knives, but the pressure from the Big box retailers to make price points has really cut into the quality of the basic line knives.
In most cases I recommend skipping the AUS series too as they are very touchy about heat treat, ALmar does a good job, so does spyderco, but others seem to have difficulty getting it right.
Benchmade, spyderco, RAT, Fallkniven, knives of Alaska, and others are still making Good knives at resonable prices for what you get.
Steels to look for are: the D2, the A2, ATS 34, 154 cm, 12c27 from sandvik, and the CPM lines of S30v and S60 V, there are some others I might have missed. Also the old standby 440C is still good when treated right. the qualtiy of steel available to the modern manufacturer are outstanding. Micro melts of the high quality steels mean that toughness, hardness and edge retention levels are at levels old makers could only hope for, while prices are in moderate for the Quality available .
Alhough only spyderco is making in folders, the newly released H1 steels are really a new breakthru, having no carbon in them, they do not react with o2 and there for can not rust. They get harder as you work them, and they use nitrogen in place of the carbon to get the same postives of the high carbon stainless with the inertness of the nitrogen for corrosion resistance. I am waiting from someone to make a good small work knife of H1 steel in a fixed.