My Cold Steel large Voyager has held up really well.
It's true, the riveted in pivot pin isn't adjustable, and the plastic will flex over time (like mine has), leaving a less than perfectly tight lockup in the handle. But it doesn't matter, honestly. It'll still go through a car door, and it's lasted 2 years of me beating the crap out of it. The tip came off, I reground that, though I was throwing it around (literally, throwing). It's tough as nails, I drop it all the time, throw it around at a 2x8 we have in our living room (full of knife marks

), hammer stuff with the handle, pry stuff with the blade, use it as an axe vs. a knife sometimes, and it's still plenty functional for me.
People complain about lockup a lot, but the lockback doesn't come loose, and the blade, although having some wobble side to side, still does its job every time I ask it to.
And for a thick 3.75" blade, 3.75 oz. is darn light (plastic handle).
Just my $0.02
_z