This question is for anyone has experience with the MCACC feature (automatic calibration) of the Pioneer Elite receivers: Do you use the MCACC feature and then leave it set that way? Or do you go back and adjust it manually?

I just received my Pioneer Elite VSX-49Txi, but I haven't set it up yet as my HT room is still being finalized (wall painting). The manual has both auto and manual surround set ups.