Sorreltiger:The only problem is that making comparisons while there is sporadic bass will be very difficult. Personally, I'd try a music or musical blu-ray where you can play a whole song and move the sub around. You either love it or hate it, but I've found that there is a lot of bass on the Mama Mia soundtrack and it needs good control so as to sound tight and not boomy.
Good point , when I finally try the setup I intend using the players A/B feature to loop the bass track
To be honest not convinced the "listening position" suggestion is the best , as when setting 75db at that position where do you take the meter reading , where do you point the speaker cone?
I reckon the THX deep tone might be worth trying
Another mag reviewer swears by the " Lifted " featured in ratatouille for testing your system
Thanks to everyone who responded so far ,Keep the suggestions coming