In case anyone's interested, I've been writing reviews on Epinions of all the cars I've driven in shopping for my new car (13 in all). I eventually chose the IS350 which can viewed here:
http://www.epinions.com/content_220405993092
This review will have links to all the others in my search too, if you're interested in reading them.
David.
2006 IS350
Premium+ w/ Nav
Galcier Frost Mica/Black