+1 Wayne, Volante all the way for me too matey.I am presuming your car is a DB9 coupe.
If a softer ride quality is more what you require you may want to try a Volante version.
These cars are always going to give someone grief in some areas and it does shock me that such a marque is plagued with issues on both the older stuff and indeed the newer stuff considering what we have to pay out for them in the first place.
One would think they would be Bullet proof but sadly they are not.
Maybe you should have your suspension bushes checked out or as Wayne suggests, go take a Volante for a test drive and check the differences for yourself.