You know when you put something on and it just feels.....right....
Yep just purchased a replacement set of headphones - check out the Sennheiser PC 320 at Amazon - http://bit.ly/pc320headset
The obvious design upgrade from the Sennheiser PC151 model that I had is that now they don't have the "inline control" for volume and mic mute which is where my last pair failed.
Basically the volume is now a rotating disc on the outside of the right ear and the mic is an automatic switch when you raise and low the mic boom.
By solving this issue along with thicker and stronger molding near the plugs, hopefully this will last longer than the 29 months for my last pair.