I am building a computer and I hope to save some money on my sound card. At first I will use headphones until I get enough for speakers. The comp will be solely for gaming, so I won't spend more then $150 or so on speakers, which kind of limits me to 4.1, so I don't think I need a 5.1 sound card, unless you all really recommend it. Again, comp will be almost exclusively for gaming. Which sound card under $50 fits this criteria?