I think I know of the knife to which you're referring. Unless NIB, $16 is a bit high; they can be found at flea markets in used condition for $10 or so, depending on if the person tries to pass it off as a real SAK.
I'd rather have an old Wenger with sloppy backsprings than an old Colonial knife that's new. With that said, US-made Schrade knives, and the US-made Camillus, those are some nice knives; while Rough Rider is nice for trying out new patterns and stocking stuffers, they don't hold a candle to the oldies, personally. At least we still have Case, GEC, Utica, Bear & Sons, and maybe a couple of whom I'm unfamiliar to produce decent-to-excellent quality pocketknives showing the US as a whole still has some good knifemakers left. Note: I'm not dissing on any manufacturer of other countries, Taylor Cutlery aside. I'm quite pleased with my Rough Riders, for instance, especially at their price point.
Got to avoid the Taylor Brands Schrade.... did you read what happened to us at SHOT this year with regards to them? Def
I got a set of slippies at the show last month- they were giveaways, and while I haven't looked too closely at them, from what I've seen they are quite decent quality. Maybe not the same level as Case, but for China made knives meant to be given away they seem pretty darned nice. I'll try to get some photos up soon.Def
The Farmer being the obvious choice because it's the only one you've mentioned that includes a saw! Def
[Edit 2: Oh, and do you have a TL-29 or civilian electrician's knife to pair up with the DEMO? I find myself more a fan of the older model than the DEMO which replaced it. ]