There are hundreds of great all around blades in that price range, but if you are of a tactical bent, two of the best have to be the Mad Dog Lab Rat and the soon to be available on a very limited basis Mad Dog 3/16 Arizona Hunter. I am not a diver, so "all around" doesn't instantly mean stainless steel to me. The Mad Dog handle has survived bullet impacts, being soaked in solvents, and being set on fire, so when a Mad Dog handle falls off, then I will start worrying about the lack of pins.
For the less "tactically" inclined, my favorite working knife is a David Boye drop point hunter of BDS (cast dendritic 440C). It has an ideal blade shape for almost everthing from paring to quartering game, and out cuts any other knife I have ever owned due to excellent edge geometry, and possibly some dendritic carbide effect. I would stack this knife up against anything in a whittling or rope cutting contest.
The Quickening is a super design, but the edge shape is too unconventional to allow it to be the best all around in my opinion. The steep angle of the secondary edge makes zipper cuts a little tricky and reduces the tips precision as an awl.
The Lightfoot Hammer looks like a winner though, and just about any knife like it would be great.
Harv