I have never had the pleasure of listening to a system using a Phillips Acoustic Edge or Turtle Beach Santa Cruz. I currently have an SBLive! Value in combination with Cambridge FPS1800 speakers. The speakers are a 4.1 setup. I wanted to know if I would notice a big increase in sound quality and positional audio (I hear EAX sucks) if I was to get an Acoustic Edge or Santa Cruz? Not just big, but big enough to justify the $65-75 for the new soundcard. Also, does the AE still have the performance problems it did with drivers? I know this was ages ago, but I have no idea. I have heard the SC is better for everything but a 5.1 setup, but only from one source. Give me feedback. If it is worth it, should I go with the AE or SC?