The DB9 is an excellent choice. I drove my brother's DB9 shortly after delivery. Enough power to create all the thrills you want, yet mild mannered enough for daily driving. It performed especially well on our rough undulating Pennsylvannia back roads. I like the looks of the M6, but the style of the DB9 is awesome. Recommend the upgraded sound system; the stock system lacks the base punch.
.... And, if pure performance, power and handling are key, look at something else.