https://axon.dolby.com/
However, it uses surround sound and positioning in a manner that when 2 people talk at once, they don't conflict horribly and you are able to hear both.
Also, it is able to be set up so that you can use Push-To-Talk Button A to talk to everyone, and Push-To-Talk Button B to talk to just your lance. I would recommend trying it, for sure. Some will like it, others may not.
If you wish to try it, I've set up a Mechwarrior Online room for people to try it on. Just download the client and install
Add Kell for an invite. (Users -> Add friends.)
Edited by Kell, 02 July 2012 - 01:55 PM.