In addition, have a browse through the forums (and do a search for new buyers) and youll find loads of things mentioned (like corroding alloys, dodgy stereos etc). At the end of the day, the IS's are great cars Keith, and now better value than ever before. Have a look through buy and sell here too as there are a few members cars up for sale too.
Good luck, and keep us posted on how you get on... :)