I guess I've had the classic, pioneer and compact as EDC.
The classic is nice because I use every tool in it, with decent frequency except the tweezers. But the few times I get a splinter, man, I really want the tweezers. I can't EDC it alone though, it has to go with some other pocket knife with a slightly larger blade. A case mini copperhead or case mini trapper or the pioneer usually get paired with it.
The pioneer doesn't do it for me as a sole carry SAK. I'll use the knife and awl the most. Usually I'll need to pair it with a classic. Want the toothpick. Want the scissors.
The compact is my current EDC since I got it in March. It would be too thick for me if it fell sideways in the pocket, so it's often on a Tec p7 suspension clip which makes it comfortable. I haven't used the pin, pen, or eyeglass screwdriver yet... But the other items have been used with decent frequency. I find the knife, scissors, nail file, toothpick are the highest use items.
I also have a climber and OHT, but those are too big for me to EDC. I've also EDC a few leatherman Keychain models, but they all are relatively heavy for their size compared to SAK for my pockets.
I'm sure everyone has a different EDC need/want. Not sure you can decide until to try a number of different models.