Five months ago I traded my 2002 XKR conv. for the 2005. The only available was the same color: black. I can pass it off as the same car, if I want. The upgrades are subtle but significant. I thought the 2002 was the best car I ever owned, the 2005 is now the BEST. More power, more torque, 1 more gear, better handling, better looking exterior. I really look forward to driving every day. This car has the power available when you want it. It is also very comfortable on long trips. The 2008 may be next, when my warranty expires in two more years.
Smooth power, handling, shifting. Very comfortable interior. Beautiful exterior styling.
The only minor drawbacks in the 2005 are the top storage and the retractable radio antenna. Both have been improved on the new 2007-08 models.