Also is the suspension on the f-sport versions very noicably different? I took a is350 f-sport for an hour test drive on the weekend, I was pretty set on buying it but was actually rather put off by the firm suspension...I like the sound of it but I thought on longer drives my back would ach. It was much less comfortable then my old BMW. I have only test driven a non f-sport IS250 for about 3 minutes, so interested in others opinions on how much difference there is.