I have recently decided to purchase a set of Astro A40's for my newly built PC, after some research I discovered that in order to get the 7.1 surround sound I would have to purchase a sound card. After asking at the Astro forum itself, they recommended to me the HT Omega Striker 7.1. I'd be happy to buy it, but it is discontinued in every online store I can find. So, since they are not being very helpful over at Astro when it comes to recommending a reliable and affordable sound card for the A40's, I figured I would come here. So do any of you have any recommendations? I have the Sabertooth Z77 motherboard if that makes any difference, also, I was hoping to pay around $70-$80, which was the cost of the HT Omega Striker 7.1 when it was actually still being sold. Thanks in advanced!