Welcome to a new wonderful world of knives!
As someone who recently returned to traditionals after many decades away from them and who carried Spydercos for many years, I think I can at least somewhat relate to where you're at.
The Case Trapper is a great knife and my most recent purchase. I've been buying different patterns for a while now trying out different sizes, blade setups, etc. As has been said, the full-sized Trapper is pretty beefy in the pocket. Having grown accustomed to having a larger knife more neatly tucked in the side of the pocket, this might take a little getting used to. It also depends on what you carry in the same pocket. I carry my keys and a foldable-reader-glasses case about the size of a Zippo lighter. I don't mind the size but you will definitely notice it so if you go that route, just be aware it might be a bit of an adjustment and not run away from the traditional world too soon.

But it is a great feeling knife and works very well.
That said, as a general EDC, I prefer my Mini Trapper in 6.5 Bone Stag with the Wharncliffe and Clip combo. Even before coming back over to this world I was realizing my EDC needs were not really requiring longer blades. My beloved Manix 2LW was often being supplanted by a Chaparral or Dragonfly. Mentally it seemed weird at first but practically I realized I almost never felt under-knifed. I just mention that to give some perspective on my mindset that might help understand my preferences/recommendations. The Mini Trapper also has half stops and that just kind of lends to the traditional feel of the knife. It's a great pattern.
I started with a Case Mini Copperlock and could not be happier. In fact, for me, this knife design ranks among the best I've ever handled. So slim and ergonomic but with enough blade to handle most of what I toss its way. And having the back lock sort of helps bridge that modern-to-traditional gap. I'm thinking a full sized Copperlock or a Tribal Lock or both will surely find their way into my little horde.
The other pattern I absolutely adore is the canoe. Around the same size as the previous two yet with ergonomics that are just different enough to really set it apart. I should say that so far that's been my experience with all the patterns I've tried. No matter how similar in size and general shape, subtle differences make them distinct. Anyway, the canoe is a great pattern that gives two-blade versatility in a not so big package that feels great to use. Notice that on the canoe and Mini Copperlock, the blade tang is hidden by the bolster. Not a big deal for those that aren't but I like the look and feel.
So far, of the various Case patterns I've tried, those are my top three with the Mini Copperlock probably finding its way into the pocket a little more often than the other two.
And, if you want to kill some time and be exposed to a knife world that at least I never really knew existed, lock up your wallet and tune in to this YouTube channel:
https://www.youtube.com/channel/UCppuObQHn8alCHGGVESilhA
Please let us know what you decide!