I had a 92 Jag XJS convertible with the 6.0L V-12 (traded it in for the 500SL). The engine was smooth and seemed to be able to accelerate to stratospheric top speeds, but you didn't have to worry about neck injuries when you tromped on the pedal...I guess Jaguar meant for the car to be a touring vehicle, and not a weekend drag strip contender...
2009 ML350 (84K) - Family vehicle
2001 CLK430 Cabriolet (71K) - Wife's car
2005 BMW 645CI (124K) - My daily driver
2012 Mustang V6 (60K) - Daughter's car