No sense to ever buy half sized headphones unless space is in real premium.
I call those supra-aural headphones as ear crushers, because that's their comfort for me in any longer use.
(at least if they're not something falling off from the slightest movement)
While I can wear velour padded open design circumaural (full size) headphones for whole day.
For around £100 AKG K702 would be absolute top level headphone for details with its tuning for pathologically neutral accurate sound.
Actually they reach pretty deep for dynamic open headphone if you listen for the bass, but don't expect much of "fun factor".
That bass simply doesn't make number out of itself unless really asked by signal.
It makes even overhyped Dolby Headphone sound half tolerable.
Considering what frequency responses many gaming trinkets have, it might feel like there's hardly any bass:
https://nl.hardware.info/artikel/60...-luisteren#testresultaten---frequentierespons
(loop of roller coaster wouldn't look out of place in those curves)
K712 would be AKG's vision of headphone with some above neutral bass punch.
But they're good amount pricier... And replacement ear pads cost arm and leg:
As in price of whole K702 for pair of them!
So after some half dozen years of use their total cost would have doubled from pad replacements.
Also comfort isn't on top level in long duration usage.
AKG's "automatically adjusting" head band relies partially on pressure to keep cups positioned properly.
And while on bigger head band could be tight and likely stretching parts of adjustment system fast, on small head they could easily feel like they're creeping downwards.
Beyerdynamic has good old manual head band adjustment and is clearly more comfortable.
DT990 "Edition" has step less pressure on head and ear pads are extremely soft.
Though softer pads mean that they start flattening after couple years, but replacements pads are very reasonably priced:
Price of two K712 pads giving like three pairs of DT990's pads.
So Beyers are quite cheap to keep in good clean state.
Studio use aimed DT990 Pro with coiled cable has some more pressure, but head band inside center part cushion is spring steel and could be bent.
Sound wise DT990 is not at top level for details, but it's very well balanced for overall gaming with still really good details and also good bass punch.
And for movies that few dBs above neutral bass is good to have.
It would be also easier to tone down bass in equalizer than boosting it.
For music that "Beyer's treble" can certainly need like minus 4-5 dB for 8kHz band, but in gaming that treble helps to balance bass.
K712 has some detail advantage over DT990 (though K712 has dip around 2kHz where DT990 does better) but loses about same in overall bass immersion.
I own all three and after two years using mainly K712 I'm now back on DT990 and like that comfort better.
As for that open design it's really open and you hear external sounds completely normally if you're not listening anything.
So sounds of some noisy mechanical keyboard might not be fun.