Since you're already sold, I'll encourage you by telling about the 710HS I've had for three years as of this month.
I wanted to check out the M2 steel. I intentionally abused it, and used it for my work knife, except the last couple of months, and a 7 month period where I "checked out" one of my customs. Wore the entire coating off from the thumbstuds forward using it on bags of abrasive materials, then had it done up in boron carbide while BodyCote was doing work for individuals, to "test" this new finish that was supposed to be so indestructible (it's not, btw). I've beat it through sheet metal, and plywood, chopped it into boards, and also a coat hanger alongside some customs in S30V when that steel came out. Cut up aluminum cans, sandpaper, thousands of feet of cardboard, hundreds of plastic straps and pieces of rubber hose, pried open a locker, and handles on dockboards, scraped welding splatter off steel, and gunk off my boots, dropped it on concrete and steel floors, and done pretty much anything I could think of to it without risking breaking the blade.
The edge has been reground so many times that the edge bevel is 3/16" wide because it's so far up into the primary grind, and the tip has been redone by Benchmade twice. BM also replaced the scales, as a problem with the pocket that the Omega spring rides in on some of the early ones apparently caused my springs to break (both of them-separate occasions-no problems since the scales were replaced).
The knife has probably had several lifetimes worth of normal use put on it in the last couple of years--all in the name of science, heehee!
Aside from needing LocTite to keep the pivot screw tight, now, the knife still functions perfectly.
I carry a BM520 right now, but the 710HS still rides in my toolbag, and gets brought out for stuff I don't want to mess up my newer, or more fragile knives on.
I highly recommend it /ubbthreads/images/graemlins/wink.gif