Buy the Razer BlackShark V2 X Gaming Headset.

It is the only one of the three actually built, priced, and proven for gaming across every platform you own.

What was compared

1. Teammates hear you, not static
Razer's cardioid mic is built to cut background noise for callouts. Reviewers flag the Stealth 500's mic monitoring and flip-to-mute acting up, and the H391 is built for office calls, not combat. If voice chat actually matters to you, the BlackShark wins clean.
2. Won't die on you after six months
Owners report the Stealth 500 'crapped the bed with minimal use after 6 months' and flagged slow support. The wired BlackShark has no battery or Bluetooth chip to fail, just a cable and drivers, and years of reviews back its durability.
3. Plugs into anything with a jack
The BlackShark runs on a plain 3.5mm jack, working on Xbox, PS5, PC and Switch with zero pairing or drivers. The H391 is locked to USB-C PCs, and the Stealth 500 is Bluetooth/Xbox-tied, dead weight on a PS5 or Switch night with friends.
4. Lighter head, fewer hot spots after hours
The BlackShark is wired and light, with memory foam cups reviewers call comfortable across long sessions. The Stealth 500 crams a battery and Bluetooth radio into the band, adding weight and clamp pressure the Razer never carries.
5. Cheaper or wireless still won't beat this
The H391 saves you 25 dollars but is a call-center headset dressed as a bargain, with weak audio and no gaming features. The Stealth 500 adds wireless and a 40 hour battery but costs almost double and carries real reliability complaints. For actual gaming, the BlackShark is the one built for the job.