There's easy way for turning any standard quality headphone to headset.
https://www.overclockers.co.uk/antlion-audio-modmic-v4-muteless-sp-042-al.html
Beyerdynamics are even easy to DIY mod with mic taken from Creative's cheapest headsets. (SB Blaze has replaced that Fatal1ty)
https://imgur.com/gallery/bKU4H
For maximum competitiveness AKG and Sennheiser have some of the best models.
But strongly suspect that those Astros have quite strong bass, which would make neutral bass feel plain anemic/lackluster.
So I guess you would prefer to keep good strength in bass?
For good balance between some strength in bass and overall good sound for gaming Beyerdynamic DT990 is one of the better ones for its price.
"Pro" version can be had for little over £100.
Though as intended for studio use it has coiled cable and little more head band clamping force than standard "Edition/Premium".
Pro (Black) Limited Edition would come with normal straight 3m long cable... and really nice black look.
More expensive AKG K712 would have also quite similar frequency response with stronger than neutral bass.
Good lower bass is challenging for open headphones, so actually there aren't that many other such headphones.
As for binaural-simulation Creative's SBX Pro Surround is very well balanced.
(set all sound settings to 2.0/stereo and disable effects/processings to avoid messing sound)
If those gunshots inside first minute don't sound like really coming from far away and different directions that's because of those Astros.
Sound Blaster Z bulk/oem is very good for its price and would drive 250 ohm Beyers very easily.
That cover of retail version is really more cosmetics than any protection.
Though even budget class Audigy Fx would drive Beyers far to hearing dangerous volume.