Good thread, I took this advice from Chalenge a year or two back when he first posted about it, and haven't regretted it. I will say that the audio on my newest MB, x99 Strix Gaming, is an improvement over some of the past onboard audio, semi reasonable amplification etc. Now, that said, I would absolutely NOT want to use it over the SB card, I have the same one as Chal in 2 systems, and am running stock sound in the x99 until I get another sound card on black Friday. Just saying that onboard audio is slowly improving, especially with the above MB, they actually put SOME effort into it at least.
Skuzzy's headphones are excellent, I tried a pair just like that out in a store, what I like most is the comfort of the ear cups, they are worth it just for that. The Sennheiser Zero and One I had used before going the the Sony MDR weren't something I liked wearing for long periods of time, and IMO the comfort and fit of the headset is as important as how the drivers inside the ear pieces sound.