The Glorious Model O- did amazingly well in my testing. Much like its bigger brother, the Model O, the O- is an ambidextrous mouse with side buttons on the left side only. Due to its significantly smaller size, however, it's mostly suited for fingertip and claw grip. Luckily, the O- has all the traits that already made the O a success: The sensor, PixArt's PMW3360, performed flawlessly in my testing. Furthermore, click latency is very low when using the lowest value for debounce time in the software. The main buttons provide a satisfying click response, and (on my sample at least) there is hardly any horizontal wiggle on the buttons. The scroll wheel is the exact same as on the Model O, with quiet scrolling and tactile steps. The seriously low weight, highly flexible (and now thinner and firmer) cable, excellent mouse feet, and grippy coating all result in a mouse that handles very well. RGB lighting is done tastefully, with a rich selection of pre-defined programs to choose from in the software. Speaking of which, the software provides all the necessary options while being bug-free and resource-friendly.

If there's anything to complain about, it has to be the side buttons, which are merely decent. Still, with this many points on the plus side I think it's fully warranted to award the Glorious Model O- the Editor's Choice and Great Value awards.