I purchased the Motorola S305 Bluetooth Stereo headset the other day to work with my Evo. Amazon.com: Motorola S305 Bluetooth Stereo Headset (Black): Cell Phones & Service While I was out walking the doggie, I noticed immediately that with the phone in my left front pocket, if I turned my head in the slightest, the headset would skip and stutter a bit. I was ready to return the Moto until I switched the phone to the front right pocket and the problem was gone! I'm betting that all the receiver/transmitter bluetooth goodies are in the right side earpiece and that my body was causing the dropouts with the phone on the other side. If I cover the right ear piece with my hand or touch the phone a bunch, the sound will skip.The headset may be just more finicky, or the evo's bluetooth receiver/transmitter isn't very powerful. In any event, they work fine now as long as the phone is on the right side of my body and I'm not covering the headset or phone with my hand. They're pretty sleek looking and have decent sound. For $34.99 on amazon, can't beat it!