Should I get a new monitor?

Currently using Asus ROG strix XG258Q, 240hz but wondering if it is relatively good to other 240hz monitors used in competitive fps games

I bought it back in 2015, didnt really think much about its quality then and I dont know much about monitors either.

So my question is: is it worth getting another? I have a good gpu but my cpu needs an upgrade. I mostly play deadlock atm