Harry,
Hmm, probably I could agree with two main complaints of three...
Handle ergos were poor when engaged in extended use
I couldnt describe my impressions in so strong words, however AFCK handle works way better for me as well as Military one.
After reading so much about the 710HS's edge holding ability, I was disappointed to say the least
I think you had somewhat exaggerated exceptions as to M2 steel edge hold as well as lot of other Forumites considering that
newer and more exotic steel certainly
should hold an edge better than well-known one, say ATS-34. About two or so years ago I have made some comparison on hemp rope cutting between MB Pinnacle with ATS-34 blade and Nimravus Cub with M2 blade. Both knives were sharpened to the same edge geometry using SPYDERCO Sharpmaker. I have sliced 1/2-inche thick hemp rope until blades stooped to shave forearm hair. In all three trials Pinnacle won with clear cut outcutting Nimravus Cub, if I remember well something like 80 cuts versus 70 to 75 ones.
Some time later I have tried another ATS-43 blade (SPYDERCO Tim Wegner) on the same rope and it displayed approximately the same number of cuts that M2 Nimravus Cub blade.
I have published these results here but this didnt cause too much interest, someone could search archives if he or she would like...
The main advantage of M2 over ATS-34 (or 154CM) is that it is less brittle and less prone to chipping, in another words it is somewhat tougher. So the edge could be sharpened thinner and cut better or it could be stronger at the same thickness and cutting performance. It is not the same matter as edge hold, isnt it?
Well, time to sum up the best way to do not experience disappointment is not cherish unjustified exceptions. Wow, seems I have said this already numerous times...