Which mouse should I get?

get the Logitech G303 rgb mouse, you have lighting and you have upto 12000dpi.
But the good thing is that the sensor has a native dpi at every 50 increments. so you will always have a native DPI which is good for gaming.

I have and i love it. you should try it too.

the shape is diamond like, but trust me it feels funny for the first week then you get used to it.