I have a few Benchmade knives and a couple of SOGs. The SOG Spec Elite has a lock that resembles the Axis, and has a very smooth and quiet opening action. It was a gift, so I don't know for sure what it cost, but its list price at Cabelas was about forty or fifty bucks more than a Griptilian. I don't know if the difference between VG10 and 154CPM is enough to justify the extra cost.
My other SOG is a Flash II with a partly serrated tanto blade. Although a lot of people swear by this knife, I have never bonded with mine, mostly because of the tinny sound the lock makes when the assisted blade opens. I would probably like it better if it had a drop point and a plain edge.
I would put any of my Benchmades ahead of either of my SOGs. The Griptilian is simply a brilliant EDC, even in its plain-Jane livery. I think I would like the Mini Grip even better, but the Grip is what I got, another gift.
My favorite Benchmade is the Mini Barrage. A lot of people do not like the assist; I do, although I would still like the knife without it. Other Benchmades that I would particularly like to own are the Bugout, the Volli, and especially the 940 Osborne. That one is up around $175, and it is easy to spend more on better steel and handle materials, either in upgraded factory versions or in aftermarket additions.
Overall, I strongly prefer the Benchmades over SOG. I am not aware of any SOG that I would really like to have.