Pros: Weight, Ease of Opening, Handle Material, Blade Sharpness
Cons: Lock Type
Best option under $30
I've had 2 of these over the course of about 4 years not because they're bad but because I like them so much. It uses sturdy rivet pins to secure the handles to the blade which allows for extended use without having to worry about the entire thing falling apart and flying into your face while in operation. the other issue knives around this price point have is that the handles will form weak points and break in half which I have found no sign of yet.