There are way, way too many answers here, even if you try to be as objective as possible.
Delica, Endura, DF2, PM2, Manix, GB2, Sage 1/Sage 5, Tenacious, Native, Pac Salt... all would probably qualify. I think the new Efficient/Polestar/Rhino will likely qualify as well.
But, I think you can even look at the top end, and see value there in the sense that you can get a near-perfect production version of a custom knife at a much, much better price.
Spyderco Nirvana: ~430
Rassenti Nirvana: ~1700+ on AZ Custom Knives
Spyderco Techno: ~190
Slysz Mouse: Couldn't find a current price, but one sold in Sept. on BF, last listed price was $1800.
So you could argue the Nirvana and Techno, for example, are very good values in that sense. It's probably the same with the Mamba, Tighe Stick, Magnitude, Rubicon, and other high-end collabs.
Current: Dragonfly 2 ZDP-189, Chaparral 1, Techno 1, Delica 4 HAP-40, Dragonfly 2 HAP-40, Mantra 1, Ladybug Salt Hawkbill, Nirvana CPM, Endura 4 HAP-40, Sage 4, Para Military 2 CPM Cru-Wear, Sage 5, Caly3 HAP40, Sliverax, Lil' Nilakka, Chaparral Raffir Noble, Zulu, Manbug HAP40, Meerkat HAP40, Sage 1/Sage 2/Sage 3 CF, Introvert, Techno 2