I mainly use Atom+ for my "new" AKG K240 Sextett Late Production and K240 DF (Sextett drivers), for those cans G6 lose breath, but for newer Monitors (still 600 ohm but is close like DT-880 600 ohm power driving) G6 is fine enough (with some modification: turning off RGB light, set Windows Power management for USB ports at max so no Eco optimization, using cooling for long hours section). AKG K260 Pro is also in G6 range.
I don't think that Amir, Soldierdude and Oratory1990 would use G6 for everyday like you and me, G6 is what USB 2.0 power and data transfer would look like at maximum power and X5 with USB 3.0 can beat that with no struggle but at consequences with quality and software dumpster fire.
For X5 problem know because I am still present in r/SoundBlasterOfficial community and every month people complains about X5 software, hardware and if I am honest: I have not big hopes in X5 before came out, but after few weeks X5 show all problems. My activity in community is helping someone who have problem with G6 I will try to help him. Also made some comparison between G6 and X5:
https://www.reddit.com/r/SoundBlasterOfficial/comments/12wetel
Still problem with USB microphone persisted and Bluetooth playing.