I had a 2005 XK8 that was beautiful and I loved. Unfortunately, the teenager who was texting and didn't look up when she rear ended me at 45 mph didn't care how much I loved it. The car was totaled. Now I have found a 2006 XK8 but I've also found a 2009 XF. The XF has 58,000 miles, the XK8 has 23,000. The XK8 is tried and true and I know it well. The XF has a lot of updated amenities that might be a nice change. Should I be concerned about the higher mileage? Any thoughts on which is the better car to buy?