I've got a Code 4, Recon 1, Large Voyager, and a Lawman. I think the Lawman is the best balance of the strong triad lock with a robust, but relatively thin and easily pocketable design. It is not a small knife but it is the smallest of these 4 models.
I found the Code 4 to be too slim, so much so that it became uncomfortable to use for prolonged periods of time or on cuts that required more force than usual. That said, it is large but slim and so easy to carry.
The Recon 1 is great with a solid design. It seems to me that the S35VN blade does not hold its edge as well as I'd like, although it is still perfectly serviceable.
The Large Voyager is just an excellent knife, especially for the price, with the most comfortable handle of any of these 4 knives. Its AUS10A steel sharpens up easily and holds its edge well through fibrous material. It would probably be my favorite Cold Steel folder but for the fact that it's a little bulky (I cannot fathom carrying the XL version). As mentioned above, the clip and handle scales will definitely need to be modified if you want to even try clipping the knife into your pocket.
Any triad model will work well. Just figure out what you want to use it for.