Was wondering what your guys thoughts were on this?? How many people here have done this expensive upgrade. It seems be 170 bucks for a the digital connection. In my opinion, the price is holding me back on the upgrade. Question... Xm is delivering a 2 channel stereo format correct??? So in our Dolby Digital receivers via this new Toslink Optical, you would not be able to engage DPL2 with the Digital connection to do any sort of Multi Channel Mixing if you choose??? 2 Channel Purists can line up to shoot me!!! LOL!!