Would you mind me asking what makes a set of headphones better for competitive gaming?
Why would they differ from a set of headphones that were good for normal games? Are you sacrificing audio quality for something?
soundstage - how wide the stage is in front of you
for example a really wide soundstage makes it easier to pick out where the sound is coming from think of it as surround sound. being able to pick out where a sound is coming from makes listening to gunfire/footsteps more useful
recessed bass - bass isn't heavy
if your trying to listen out for footsteps the last thing you want it booming grenades going off all around you, so you want a headphone which is bass light, so you can hear stuff better
the opposite applies to immersive gaming, you want to feel that grenade hit you, so you want excessive bass or decent bass at least
this is something a lot of people don't understand, you cannot just use any brilliant music headphone for gaming.
I own HD600's which is currently my favourite music headphone, however I have never used it for gaming because it doesn't suit gaming. listen to music on it and your in heaven.
The best all rounder I have heard personally are X1, Q701 (which can be bass modded) and DT770's and in that order. Albeit the Q701 is a better headphone it's hard to drive which is why I have placed the X1 above it.
It needs a very powerful amp, a mixamp alone isn't enough it needs to be double amped. I use a Schiit Vali with mine.
This is why I own so many headphones, they all have their own unique uses.
I own 2 small portable pairs HD25-1 II, Momentum on ears. An all rounder DT770. 2 Gaming headphones HD558's (easily driven) and Q701's (hard to drive). Reference Quality headphones HD600's.
I'm also planning on rebuying a set of fidelio X range because it's a brilliant "fun" headphone.
That will be 7 headphones in my collection and it will end there. I also have about 10 pairs of IEMS.
If your looking for the best all rounder get a fidelio x1 or a fidelio x2. It can do pretty much anything very well. Booming bass, open wide soundstage, great for music and all types of gaming but not a purist competitive gaming headphone it does well.
You can pick up a second hand fidelio x1 for like £100