Need a lot more detail on what kind you want. But, +2 for spyderco. Most people buy knives because they look cool. CRKT is a good example. They're too bulky and have bad ergonomics, but people buy them because they're tacticool and have tacticool names like M16. Kershaws...well, I won't even go there. Cold Steel actually makes some good stuff. Look at and handle a voyager. Spyderco's are just about perfect, though they don't get a whole lot of recognition because their knives are only made to cut things, not make you cooler. That being said, my carry knives are always either a spyderco endura or a benchmade griptillian (one handed opening and closing is fairly useful in my line of work). Those are both around $50. Kabar makes a knife called the dozier, you can find them for $20. Same type of steel the crkt's are made out of, but they don't look cool so they're a third of the price. Flame suit on.
PS, after checking recent info on the m16's, looks like they went to AUS4 steel. Which is lower quality than what you get in a $20 dozier. Though this is a move that often makes people think it's better, as softer steel means its easier to sharpen.