I am considering upgrading my receiver because my current one(pioneer 07tx,upgraded for dts by msb tech) seems to be showing signs of an eventual probem. I was watching my dts laser of jurassic park and when the scene occured where the brontosaur comes down from eating some leaves, the sound went out. There was just static. I tried playing a dts dvd(The Mummy) and there was no sound what so ever, yet when I switched it to dolby digital the sound was there. The dts sound eventually did come back on when I turned the receiver off and then back on. But then there was an odd clicking sound. I'm pretty sure the dts chip that was installed inside may be showing the beginning signs of a problem. I am trying to decide between the onkyo 787 and the denon 3801. Both are around the same price. The difference is the onkyo has thx-ex and dts-es matrixed, the denon has dts-es discrete but no thx-ex. Does anyone have any opinions on these receivers and is there a BIG difference between matrix and discrete in terms of what you hear?