That's actually a pretty open-ended request - the "best" steel, handle shape, etc. all tend to be pretty subjective, no matter the price. Personally, I second the Skyline. I'm a staunch believer that it's the best value, dollar for dollar, on the market right now, performing far above its price point (Which, by the way, seems to have dropped recently - it's currently under $33 on Amazon, which is insane for a USA-made knife of that quality). The flipper on mine is great, the handle is simple and taut, but surprisingly comfortable, and I love 14C28N steel. It's pretty easy to sharpen, but actually holds an edge quite well. I actually prefer it to a lot of "better" steels like S30V. There's a surprising number of great options in the sub-$60 range, but the Skyline (in my opinion) blows them all out of the water.
That said, is a touch over three inches, so if that's a hard limit for legal reasons, etc., or if the Skyline just isn't to your liking, some other options:
Ontario RAT II
ESEE Zancudo
Kershaw Injection 3.0
Kershaw Emerson of your choice
Kershaw OD-1 (kershawguy has blems for $55 right now - the cam flipper is incredibly addictive)
CRKT Ripple 2 (IKBS flipper)
Cold Steel Tuff Lite (If you don't mind sacrificing some piercing capability, this is actually one of the best utility knives I own)
Spyderco Delica