SPL just focuses on volume and not trying to correct room issues, but many people swear by it. Do some sort of regulated calibration (either built in to the receiver or get an SPL meter) and see where it takes you. Maybe you are like I was a few years back where I used to love having the surround channels turned up to make things seem more dynamic. I still run my surround a bit hot, but only a couple of dB. With my new theater under construction, it will be interesting to see how I tune it since it will be a more ideal room with sound control and treatments of the room itself. Maybe I've just been compensating for less than ideal room acoustics.
