If Razer ever bothered putting memory on their mice for a FULL software-less way to customise it and then uninstall the bloat, I'd consider them again, but both the last Deathadder (V3) Viper, and Viper Mini saved only some of the settings to the mouse, essentially forcing you to run the Synapse data-collecting bloat-suite for something as obvious as disabling the LED or setting it to something other than green.
Even though the software is one of only two negative points listed in total, that single fault is a total deal-breaker, every time.