On this knife I went with 15. I’ll do this with a lot of knives, see how they hold up, then either strop back to sharpness or decide if I need a microbevel.
I think it can depend also what you’re going to be using the knife for. The 940 for me is kind of a tweener knife even though it has a longer blade. I’m not going to reach for it when it comes for heavy cardboard work or other heavy use so for me it’s more of a mail opener, package opener, average EDC use, etc knife. In that case, 15 dps shouldn’t be an issue.
I haven’t used Benchmade S30V that hard, but Spyderco S30V at 15 dps has been fairly impressive to me and easy to bring back to hair popping sharpness with the strops. Again, I don’t baton trees or cut through car doors, but do a lot of whittling and heavy cardboard work and is just my 2 cents.