I agree with niemrieng, MX80 is much stiffer than BS11 so if that's already too much then definitely don't try to go for the MX80. I also think that the MX60 is about as stiff as the BS11, so that might not be good for you either.
If you want an easier to use Bravesword, then try BS12; for a Meteor, try the MX30L.
Have not used BS11. But used MX80, NS9000K, BS LYD and BS-10.
MX-80 is easily one of the stiffest racquets I ever used, even stiffer than NS9Kx. IMO the only racquet that has comparable stiffness is VTZF. BS LYD and BS10 are more flexible, and I doubt BS11 will be anything stiffer than LYD, really.
MX80 is an awesome racquet but if you are finding BS11 heavy and stiff, you will probably not enjoy MX80. Just my two cents. If you prefer the "Octablade" frame and 80 hole pattern of the Meteor series, then MX30L is perhaps a good choice.