The Behemoth features a much curvier design than its smaller cousin, the OCZ Eclipse, with a deep thumb groove on the left-hand side, and two shallower grooves on the right-side to rest your little and ring fingers in. It's also larger (thus the moniker), and sits very comfortably in the palm of your hand. The thumb rest in particular feels very solid, with a small flange at the mouse's base that supports your digit. In actual gaming, though, the grooves for your smaller fingers seemed to be just off; not enough to lead to mousing mistakes, but it certainly felt... odd.
Of course, other hands will vary.
Like most gaming mice, the DPI of the Behemoth can be switched on the fly, in this instance via a one-button toggle that cycles you through the settings you've programmed in. There's also a very easy to reach rocker button under your thumb, and the rubbery scroll wheel also features lateral clicking. The wheel itself is very responsive.
But our favourite feature of the Behemoth is its cable and the innovative system for managing it. The cable itself is cloth wrapped and very hard to kink - it's going to take a lot of punishment, and looks classy to boot. There's also a series of channels in the mouse's underside - kind of like what you find under a desktop phone - for you to slot the cable through. There are six positions you can have the cable feed out of the mouse, meaning you can set it up according to your individual desk. Is your mouse cable always bumping the wall behind your desk? Feed the cable to the side and you no longer have a problem.
Along with the now standard system of interchangeable weights, the Behemoth has a lot going for it. It's not our perfect mouse, but it certainly has a good price-point and some very welcome features. In game performance is on the better side of average, but not enough to make us switch to the Behemoth. But if you're looking for something new, this isn't a bad choice.