Many thanks for the replies, I will have another bash at the sat nav voice and tpms. Will also look at the photos to see if my wheels look the same. At this stage I much prefer the GS, the quality seems a notch up, you get all the toys at mid range Luxury level including blind spot monitor, cross traffic alert, cooled seats, memory seat and parking sensors front and rear. I was also lucky to find a 2 year old car with the sunroof, ML and 15000 miles for about half the cost of a new one. It is much quieter than the IS and the level of waft when driving is tremendous, I actually drive much slower now and love the discrete classy looks but it is much bigger than the IS, not something I really noticed until parking in a Tesco car park or putting in my garage for the first time.