Having run through series of Comms equipment, I would heartily recommend Ear-cond mics. Currently running the Battle Rhino ear-mics which is robust.
http://www.scopeandlaser.com/index.p...x=0&submit.y=0
1) Owned throat mics ranging from DEVGRU to Chinese throat mics and had played with people running IASUS. Even with the DEVGRU, unless you're skinny and line it up right you'll still sound like a fish over the radio.
2) All Bowman replicas (Cavalvy and Element) are great to transmit, but horrible on receive - even at the lowest radio volume it's still fairly audible. If you're playing in huge squad battles and where stealth is not essential, then go for a Bowman. But if you sneak around quite a fair bit and play a lot at night, pass.
Now, the transmission on Bone mics aren't 100% clear - but they're passable, not intrusive, and if it has an ear hook it'll even stay in your ear the whole day without being annoying. Oh, and doesn't get in the way of helmets and caps.