I am of the opinion (having listened to so-called surround sound headphones) that they are inferior to tried and tested HP's
In fact for your purposes a pair of senns, BD, Koss or any renowned pair of HP will do the job better especially as you specify that your PC will be doing the processing. In this case you want accurate reproduction of the source, any HP that has a built in surround effect will more than likely make things worse by adding to what is already there. I've dabbled with surround effects using foobar2000 via Senn HD595 with satisfying results although IMO if you're looking for post-effects, Dolby headphone is better.
My suggestion,...... stick to a trusted brand and not the fly by nights who appeal to the public's thirst for 'surround'