My wife just traded her 04 CTS on the GS430.We had an appointment at Noble Mercedes in Fredericksburg Va to most likely purchase a dark blue CLS500 that we had been dealing on when Lindsay Lexus rec'd a red GS430. After seeing what Lexus gave you for 61K compared to 72K from MB, and rumors of MB reliability we went with Lexus. She had an 02 S-Type that had lots of services issues that she traded on the CTs when it only had 10K miles on it . I felt that car handles better at high speed than any other car we have owned, and tried to get her to look at an 05 or 06 S-TYPE R, but couldn't convince her. She will ntrade in a year or 2 and We will take a look at Jaguar again then.
At this point with only 1200 miles on the Lexus, she is happy with her choice.