Performance of a mouse is a rather subjective thing, as there is no definitive, quantitative way to “measure” its success. Specifications toss out a bunch of numbers, but those don’t mean much in how a mouse handles and feels. Rather, it’s qualitative thing, how well it can perform in a variety of settings and applications in everyday use. That being said, the best way to evaluate a mouse is to just use it in a variety of applications and see how if feels after awhile.
I do quite a bit of Photoshop and MS Office work, as well as some AutoCAD, not to mention a fair share of gaming as well. The precision in working with technical drawings and models was very good, zooming in for detailed adjustments in Photoshop and AutoCAD, and moving around is smooth and efficient. The DPI adjustment was very useful to change quickly when moving around at very fine tolerances when zoomed in. There was also no difficulties with the sensor when working on various surfaces. I also tried both a flat black surface and flat white surface and the MS-3 Revision 2 tracked superbly on both.
When holding the mouse, each of the fingers, from index to pinky, are cupped into the side slots on the MS-3. Admittedly, it’s a bit weird at first since no other mouse really does this. The Mionix Naos is similar, but not nearly as extensive as the MS-3 in its more aggressive design. Interestingly, however, you do get used to the unique design of the MS-3 after a short adjustment period, and it becomes extremely comfortable as your hand (and all your fingers) nestle easily into place.
Gaming with the MS-3 Rev. 2 was similarly an enjoyable experience. Jumping into Battlefield, I played as a sniper which requires very fine adjustments when pixel-hunting for enemies at long range. Quickly tapping the DPI button to its lowest setting allowed me to tweak my aim on the long shots. Battlefield is great for testing because jumping into a tank shows how slow the turret rotates compared to movements as infantry. Rather than continually moving the MS-3 Rev. 2 across the entire mouse pad to swing the turret, simply tapping the DPI adjustment to the highest setting allowed the turret to move far quicker, and I was able to acquire and destroy targets much more quickly.
I also use triple widescreen LCD monitors on a daily basis, and I even found movement across the displays and into applications was easy and natural. I always use “no acceleration” in my settings, and I found the MS-3 Rev. 2’s sensitivity changing on-the-fly settings could accommodate the movement needed to move across the huge space in widescreen real estate. After a few days, it became second nature. Precision in Windows and Photoshop was excellent across three large monitors.