I am currently starting the process of specifying requirements for a new headset to use with my Asus® CM1630-06 with EAH6850 DirectCU® video and XONAR® Essence STX audio. My current Corsair® HS-1A headsets have decent sound for a budget headset from 50mm transducers; the cable installation thereon, however, is more fragile than anticipated, as one has already lost its left speaker. I have determined that the stock strain relief on the HS-1A's cable has failed to do its job.
Since I will be using the HS-1A's replacement for, among other tasks, monitoring the audio of an Internet video stream transmission, I anticipate needing a frequency response, ±0.5dB, of at least 16 Hz - 16 kHz, and a minimum transducer impedance of 64Ω (the XONAR® packs an internal headphone amplifier that can run 600Ω cans with the correct drive settings). As of 1 April 2012, I plan to allocate a maximum of $350.00 (before taxes and shipping) for the new headset. An especially solid input cable installation is a necessity; a built-in boom microphone is optional, as I have other microphones available. The ideal cable length is about 10' (3m) due to routing considerations; the ideal connector is a 1/4" (6.5mm) TRS plug, which the Essence STX can handle sans adapters.