Colt:
I own traditional pocketknives from Schrade, Buck, Case, Camillus, Ka-bar. For actual use, I prefer either knives in the 700 series (because they are extremely solid and well-built), or some of the Schrade Uncle Henry pocketknives (unlike the Old Timers they have rust-resistant blades).
I'd have to say the Buck 700 series is very consistent in quality. I also like many of the Case knives...they are probably the prettiest of the lot I own, and work great, too...but I'm afraid of dropping one and breaking the bone handles, so they rest in my collection.
The Ka-bars and Camilluses I own I got in the 1970s and are good, but I've had some trouble putting an edge on some Camilluses.
Some of the Boker pocketknives I've seen look good, but since I'm on a using spree now, I probably wouldn't buy one for fear of damaging it.
Jim