Hi,
I bought the each of the new x-gamer and mp3 for myself and my bro, its kinda annoying if you have a dolby digital decoder on you speakers. I have the DTT2500 speakers and I can't tell when dolby digital 5.1 is on because the sound card does it before it is sent to the decoder. I have to listen for it and then I don't know if it pro logic that the decoder is doing or 5.1 surrond, it had me confused a little and then u have to turn off decoding on your speakers or it tries to decode it twice and messes up the sound. But I don't know if the 5.1 in the card is better than the decoder on the speakers cause isn't suppose to be 5.1 simulated in the card. Onvia has all of them in stock, that's where I picked mine up, platinum, mp3, and x-gamer.
Alex