Thanks for the input everyone. I ended up meeting Brad and the knife lady at the Fort Wayne gun show this weekend. She let me get a feel for all of the ESEE knives and we talked about what I already had and planned usage. I settled on the ESEE-4 - the 5 was a little too large for my intended use and the 3 was a little on the small side.
All in all I feel I got a great deal on a perfect knife. Thanks again to Brad and the knife lady!