I had a DB9 for a few days. You know they say never meet your hero? Was a very disappointing experience. Went well enough but interior build quality wasn't the best, the rear seats are a non event and the handling was awful. Understeer on a whole new level. That big heavy V12 slung out front meant the front just didn't want to turn in. You had to revert to slow in, fast out. Sound was so so. Best thing about the car was when you got out, started to walk away and looked back. Oh my, it was a fantastic looking vehicle.
Having said that, good looking as the DB9 is I think the GT looks better, especially with the body slimming lack sill option. The GT also sounds sublime, is as quick as the Aston, handles much much better, has a nicer interior, has rear seats you can actually use and is just an overall better car.
No bias here, if I had preferred the DB9 then I'd have one instead of the GT.
I'd like to try the Vantage, a much better car than the DB9 by all reports. And better looking.