Thinking about getting the Attack Shark X3 - which version?

I've been using a Razer Deathadder Elite V1 for over 6 or so years and was wanting to try a smaller, wireless mouse for once. I stumbled upon the X3, and it looked really promising, but I'm confused which version should I get. I put the pro version in my basket, but honestly I have no idea if this one, the regular X3 or the X6 is better.

What's your opinion on it? Would it be a good idea to get the pro or should I get another model/entirely different mouse?