I own the Benchmade Pardue 722 (G-10 scales and tanto blade, pre-production with ATS-34 blade) so here's what I think of it:
It is without a doubt the strongest folder that I own.
The tip is plenty stout, but not so thick that it does'nt cut well.
You just know that this knife will take anything you throw at it.
So why is it in the box and not on in my pocket?
Why did I choose to carry the 551 Pardue Griptilian instead?
The blade:
I discovered that I really don't like the tanto blade that much.
When using the tip to slice, I have to angle the blade rather high to avoid the "second tip" from cutting the material.
And if I use the "second tip", then I cannot clearly see the cut.
And the blade is just a bit too short.
Combine the shorter blade and the acute angle of the tanto tip and it just does'nt make long slices very well.
It also seems that I can get my 440C Griptilians sharper than I can the ATS-34 blade-steel used on my 722.
The blade is also just a tad too thick, IMHO.
If I did more prying than cutting, then I might like it better.
The thumbstuds:
When the knife is closed, the thumbstuds rest too close to the handle.
I can never open the 722 as quickly or as reliably as I can the 551.
When Mr. Pardue designed the Griptilians, he moved the studs away from the handle more.
The handle:
The only thing about the handle that I don't like it the swell at the butt of the handle.
I suppose it is to keep your hand from sliding off the back of the handle, but in my grip (medium sized hands), my pinky finger rest directly on that swell and it is not very comfortable.
Mr. Pardue designed the Griptilian handle much better.
I hope this helps you in some way.
If you can, get your hands on the 722 before you decide to buy.
And try to ignore how good the G-10 looks and feels and consider the other things that I pointed out.
I say this because I think I was "blinded" by that stout G-10 handle so much that I just could'nt see the other shortcomings.
Good luck,
Allen