Let me start by saying I was skeptical about buying a refurbished gaming headset, but the Logitech Astro A20 has completely changed my mind. After using it for several weeks, here's my honest take.
The Good: The sound quality is fantastic - you can hear every footstep in Warzone and the bass hits just right. The 15+ hour battery life is no joke; I've had multiple 8-hour gaming sessions without needing to recharge. The flip-up mic mute feature is genius and has saved me from many embarrassing moments when my dog decides to bark mid-game.
Comfort: At first, the headband did pull my hair a bit (I have long hair), but after wrapping it with some soft fabric, it became one of the most comfortable headsets I've worn. The cloth ear cushions don't make your ears sweat like leather ones do.
The Not-So-Good: The microphone quality could be better for streaming - it tends to pick up background noise more than I'd like. Also, mine arrived with some minor cosmetic scratches (it is refurbished after all), but nothing affecting performance.
Pro Tip: Make sure to update the firmware immediately - this solved some minor connectivity issues I had at first.
Final Verdict: For the price of a refurbished unit, this is an absolute steal if you want premium wireless audio without paying premium prices. Just don't expect studio-level mic quality and you'll be very happy with this purchase.