I've got four Four Benchmade knives (Five if you count a HK knife made overseas in cooperation with Benchmade), the Sequel, a Griptilian, a Mini-Rukus, and a new Mini Griptilian.
I've gotta say, the full-sized Griptilian is a great carry knife, and while it isn't too bulky, it's still sometimes too big, especially if wearing lighter clothing in this hot weather.
The Mini-Rukus is just too big, to the point where I removed the pocket clip and I carry it in a sheath instead of using it's pocket clip. It's also a great knife, but it's too bulky for my tastes for carry.
Of the other two, I have a new Mini-Griptilian (picked it up just today, and put my own edge on it.) and a 707 Sequel. The Sequel is a great knife, aluminum handle with G10 inlays, and the one I have is a combo edge. I love this knife, and it's great for carry. I just picked up a Mini Griptilian, that's not a combo edge, but I think it's going to replace the Sequel as my primary carry piece, due to the fact that it's not as expensive to replace. It feels a lot better in my hand, and in my opinion, while it's not as expensive, it could be capable of out-performing the Sequel.
So I'd suggest either a Mini-Griptilian or a Sequel. Since you don't have a Mini-Grip on your list, I suggest the Sequel. But if you add it to your list, I think you'll find the Mini-Grip to be (perhaps, since it's really a matter of opinion) much more comfortable in the hand, and easier to hold on to. However, while it is more comfortable in my opinion, the Sequel is still the smallest. Either one of these are, in my opinion, the perfect EDC knife.