I collect anything that appeals to my sense of aesthetics(I only need a couple of actual "user" knives, so beyond that, I collect for the pleasure of owning, displaying, and admiring the blades). I own traditionals and modern folders, liner locks and frame locks, assisted and unassisted, big and small. I do tend to favor "big" knives(7+ inch blades) and machetes though, overall. If Condor puts out a new machete, and Kershaw puts out a new folder, I'm likely to be interested in both. But if I can only get one of them, it's likely to be the machete, generally speaking. Even among folders, a new big Cold Steel folder with a 5-6 inch blade is more likely to immediately catch my eye than a new 3 inch Spyderco, even though the Spydie is most likely made with higher end materials and is more useful as an EDC. I also favor karambits, and when it comes to those, I'll even sometimes buy cheap junkier knives like Mtechs or S&W(I am quite excited by the upcoming Spyderco karambit).