Yep for some reason I thought that the DB7 had a V8 but looking at http://http://www.astonmartin.com/html/db7.html you're quite right a V12 is in the current model (wonder what a service would set you back).
I went to the London Motor show a couple of years back and there was a young couple (late 20's) at the Aston Martin stand closing a deal on an Aston Martin (not sure which model) at GBP156,000. I nearly fell over.
Maybe I'll change the caption on the site to "car with most cylinders - that I got a decent picture of..."