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 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 optical mice tracked very well on both.
Gaming with the both of these mice was similarly an enjoyable experience. Jumping into Battlefield 3, 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 Avior 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 sensitivity changing on-the-fly settings could accomodate 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.
And while I am not an left-handed mouse user, because of the symmetrical design, we know the Avior 7000 will behave identically regardless. So we should assume a left-handed user will have similar experiences as those who are right-handed.
That said, if you’re a right-handed user, you will find the Naos more comfortable, which isn’t to say the Avior is uncomfortable; rather, the Naos’ design is just so good in terms of comfort and ergonomics, it’ll outshine the Avior.