Both are based on similar chips, I think. I haven't tried the Game Theater XP but I have tried the Santa Cruz. I believe both should be equal in sound quality but the Game Theater XP has a lot more features.
AMD technology + Intel technology = Intel/AMD Pentathlon IV; the <b>ULTIMATE</b> PC processor
now how would the XP compare against the acoustic edge?? I'm getting the Klipsch 5.1 which is 5 spkrs plus sub. There were references saying that the Acoustic edge supported 6 spkrs. I'm not to sure if I'll be needing it and wouldn't want to sacrifice the features of the XP for a feature on the AE that I wouldn't be using.
<font color=red>To <b>HELL</b> with your damned cookie</font color=red>.... ptooo!!