Compared to the Naos Pro and Castor Pro, the Avior Pro offers little in the way of surprises. Once again, it's not a bad mouse, but falls short of current standards.

When it comes to sensor performance, the Avior Pro manages to do well: Low motion delay across the board owing to the lack of smoothing, stable polling, and virtually no CPI deviation. In the same vein, the cable is appreciably flexible, the 100% pure PTFE feet provide excellent glide, and the buttons too are on a good level. Equipped with Kailh GM 8.0 switches, the main buttons display a snappy and defined click response, while the side buttons have some pre and post-travel, but still are decent. The same goes for the scroll wheel, which has quite nicely defined steps, yet is somewhat noisy when scrolling. Similarly to the Castor Pro, the wheel also sits lower than on most other designs, which may irritate a bit at first. Somewhat irritating too is that while still being relatively light on resources, the Avior Pro software has a significantly higher RAM footprint than those for the Castor Pro and Naos Pro.

Originally, the Avior Pro suffered from unacceptably high click latency, but this will be addressed by Mionix in the same way it has been on the Naos and Castor Pro. Unchanged, however, is the weight of 101 g, which misses the mark for enthusiasts. Granted, the Avior Pro indeed is built like a tank, but at the same time, I could think of several easy ways to shave off at least 15 g without making the Avior Pro any less tanky. The fact that the Avior Pro has side buttons on both sides certainly contributes to the high weight as well, but the same applies to competitors, such as the Razer Viper 8K or Ducky Feather, which both manage to stay below 70 g without resorting to a fully perforated shell or similar measures that may compromise shell rigidity.

Quite frankly, for $79.99 the Avior Pro simply doesn't offer enough to be considered worthwhile. Left-handers in particular might be pleased to have another option as this often neglected demographic has to take anything it can get, but competitors such as the already mentioned Viper 8K outclass the Avior Pro in almost every aspect, so even left-handers might be better off looking elsewhere. Not a bad mouse, but for $79.99, I do expect more.