I've got the OH Trekker, Climber, Compact, Executive, Pioneer, Cadet, Rambler, and Classic.
The Trekker only comes out for an outdoor expedition: camping, hiking, traveling
The Climber and Executives are two gifts that I don't use.
The compact gets a significant amount of pocket time, mostly weekdays at work. Only downsides for me are that the size is just a tad to big for my preference that it doesn't fit in tighter jeans comfortably, and the screwdriver needs to be held at an angle to turn Phillips screws.
The cadet gets some amount of pocket time also, mostly for its thin profile. Sometimes you gain some weight or the jeans are shrinking - and are trying to fit into some jeans that are too tight, the cadet fits without being uncomfortable.
The pioneer gets some time too, gets a nod when wearing the jeans that actually fit. I find the awl saves the knife from being used for an non-knife job, and the lack of a nailfile compared to the cadet - well, filing or cleaning nails can usually wait.
In a different category are the rambler and classic. These two are on my keychain. The classic was there for a long time, but has been replaced by the rambler. Mostly because the extra weight and thickness of the rambler I find insignificant.
So most of the time I am a 2 SAK carrier. One compact/pioneer/cadet + rambler/classic as an EDC.
Carrying SAKs as an EDC does not mean that Moras, Opinels, Case, Buck, leathermans aren't owned and used. Those are still chosen when I feel particular tasks are at hand.