My 436xde is slowly ging throught it's run in period. What is the best software/disc to calibrate it with. I have heard of DVE and Aria. Do these do sound? Where is the best place to get the disc from? A guy in a Hi-Fi shop said the THX optimiser does just as good a job and does sound (leading me to think the ones above don't). Is this so? Cheers in advance.