Ah ok. For the downmixed version I made from the SW DVD I kept and rearranged the 6 tracks I got. The front and rear tracks alone were too wide (and too light) otherwise. I didn't want to keep the sub bass track in the begining but it was finally better with as it seemed it compensated a lack in dynamic range.

Anyway, let me know if you're interested to make together an experience of the kind I mentionned. Then I can send you the 6 (or 5?) tracks of a cue separately for you to upmix and test (I don't have 5.1 or whatever equipment)...