Good decision! F race seats are wonderful as many have said. They surpass Porsche sports buckets, as they are now called, and Gt3 seats before, which are my runners up. Ive had three spine operations and nothing gives a better orthopedic fit and support. I love them.
I have the large race seats, with Alcantara inserts. The large seats aren't really that large. I'm 5' 10" and weigh under 150 lbs. The large seats fit me just fine, the side support is excellent, and the Alcantara inserts are very comfortable, as well. As for adjustment up and down, as some other posters have said, you adjust the seat for yourself, and you're done! Fred
My 2011 had racing seats, good for short drives, anything over a hour was a bit hard on my butt. I have Daytona seats in my 2014 and like them much better.