http://www.opsgear.com/VOX-or-Push-t...IC-p/fox-p.htm
Ive had this one for about 4 years now. Works great. Never had a problem with people understanding me. And can hear other people loud and clear.
The only problem Ive had with it is the PTT button sometimes doesnt work properly. I have to press it real tight to keep it held in when talking. I think I might just replace the button myself down the road. Also I have to tape the earpiece over my ear to keep it from falling out.