No matter how much expensive mouse you get, it will start double clicking in roughly 5-6 years if you play hardcore competitive e-sports FPS games daily. The double click issue happens due to wear inside the mouse button and can be fixed with increasing the debounce time in software at cost of more input lag, or better just replacing the mouse button in hardware.
You should be buying expensive mouse for FPS only for the sliding feel, sensor, weight, grip etc, but not to avoid double click issue because that is inevitable.