I boost my surrounds a dB or 2 also....just a little added ooomph!
I almost always leave ( or change to) 6.1 with most soundtracks....DTS-ES or Dolby Digital ES...I like adding that little extra with 6.1 / 7.1 surrounds if possible........
"Final Fantasy The Spirits Within" has a rip roaring soundtrack....give it a try.......