i dont think any company is the Best, but if im looking for a folder i instantly look at: Kershaw, Spyderco, Cold Steel, Victorinox, Wenger, Boker, Benchmade, Case, Buck (in no particular order)
for a fixed i look at: Ka-bar / BK&T, Esee, Condor, Ontario, the folder^^companys
there are so many more great companys, those are usually what comes to mind as to when i need a new knife and great products for great prices, some companys like Cold Steel have some crap like ninja stars and whatnot but they still make a solid strong workhorse folder at a price point i can afford