I would appreciate it if any of you who are familiar with these products could comment on their synergy. I own the HRT, and I'm considering purchasing a refurbished Q701 for ~$180. I'll be mostly playing blues, vocal jazz, and some classical. I also saw that the HE-400's are highly regarded, but...

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=120656535749 or http://www.amazon.com/Turtle-Beach-Advantage-Digital-Adapter/dp/B0036VO4X4/ref=sr_1_1?ie=UTF8&s=electronics&qid=1303925108&sr=8-1   Which one should give me better sounding music through my Thinkpad?

Hi everyone!  First, I would like to thank you for taking the time to read this post of mine, even if you end up not contributing. I am having a difficult time picking out my next set of headphones, so I would like your help.  I must have spent upwards of thirty hours reading people’s opinions...