Are there any alternatives?

Yes, several. For high-end, wireless FPS mice, the Razer Viper Ultimate, Logitech G Pro X Superlight, and Corsair Sabre Pro Wireless are all options.

　　You can save big with a wire, too. Corsair’s wired M65 is $60 cheaper, and there are options like the SteelSeries Rival 3 for around $30.

　　

How long will it last?

Omron optical switches don’t come with the same 50 million-click life span as the mechanical ones. Most optical switches last longer than mechanical ones, though. The M65 Ultra Wireless should last 15 years or more, long past when you’ll probably want to switch to something new.

　　

Should you buy it?

Yes. The M65 Ultra Wireless is an excellent wireless gaming mouse. It comes with the same premium features as similar mice like the Razer Viper Ultimate and Logitech G Pro X Superlight. However, you can save big with budget wireless options like the Logitech G305 or by picking up the wired version.