The Bose TriPort Tactical Headset is a good idea. It's an NSN item, so you can get them through the supply system. They're part of the current VIC-3 intercom system as well, if you want to upgrade your trucks to that. (With that you can hook up your iPod to play over the intercom, too...)
5965-01-521-0941
Plus, unlike with Peltors or the MSA MICH Ranger, you don't have to track serials on them. (Something anyone in the signal corps appreciates

)