Depends what you are using the car for but i wouldn't discount the 997 Gen II GTS they are holding strong money and difficult to find - and probably more useable on a day to day basis than a GT3 . and a good deal cheaper than a GT3 GenII . i keep a bit of an eye on the 997 Gen II market through the guy i bought mine from and my own searches - and they havent really budged in 18 months . the 991 being so much more has meant Gen IIs have stayed with their owners longer and there are not so many of them in the first place as the car was built during the downturn.
I wouldnt discount a 981 Boxster Spyder if you can get hold of one.
in terms of bond cars ..... why not Vanquish http://www.pistonheads.com/classifieds/used-cars/aston-martin/vanquish/aston-martin-vanquish-v12-------------------2002/5223861?v=b
