I've been trying to find an answer to the above stated, but I haven't had much help. Within the next year I want to purchase another headset that works for 360, One, 3, and 4... Does such a headset exist? Would I need some kind of adapter? (Already bought the adapter for the One). Money's not an issue, just one that works for all 4 and is excellent quality.

Really appreciate any help!

I'm pretty sure it exists, but you won't have an easy time finding one. Googling doesn't seem to help too much.

Works as in sound works or works as in every option work on every console. Im not sure the second option exists.

your stuck liek me, got to get one top end for my main console and maybe sheeper options for the others.  lol i got a 3.99 headset for the wiiU, gold for PS4 untill something high end proves worthy, and nothing for X1 yet.