If I were to get the Sennheiser PC 350 Special Edition Headset, would I need more than an onboard sound card to really the full potential of the headset? Also, I am wondering if I should go with a Sennheiser 7.1 Surround Sound Headset as those come with a small USB to 3.5 jack that I heard is like a mini sound card. Is this a good option? Thanks!