Wrenches.
To me, wrenches and ratchets are the mainstay of a hand tool manufacturer. What kinds of wrenches they make, and what innovations the ratchets contain, define the company in my book.
First thing I look at when a new brand comes out is the wrenches. Combo wrenches are a good indicator, as they have a box end and an open end. You can see the overall length (is it well matched to the opening sizes), the shape (and thus comfort) of the shank, and the quality of the finish. Used to be that the combo wrenches were the backbone of the hand tools. I think that that has shifted to the double box wrenches. DBE's lack an open end, but in alot of applications today open ends have taken a back seat. DBE's provide more grip, are less prone to slip, and each wrench can have two sizes, making them more versatile. For me, the DBE's are the flagships of the tool line. (It might explain why I'm always buying them even though I have plenty!)
Bonney is no exception. Their DBE's since 1967 have the patented Loc-Rite broaching system. This rounded profile grips fasteners away from the corners and more on the flats. This reduces slippage, and allows for greater torque to be applied without damaging the fastener or the tool. Nowadays virtually every manufacturer offers some form of enhanced grip on their box ends and sockets. But back in the 60's, it was a true innovation, and I think Bonney did it better than anybody around.