I have driven both extensively, both with 19's. I've put about 1,000 miles on a friend's S with air. I find the air suspension a tad less harsh than the coils. But I find the the coils more "in touch" with the road in a good way. With the coils, I drive more confidently. I have 10,000 miles on my coil sprung S, I have never scraped on a driveway ever. In fact, the front of the car body is rather high compared to the sides, it will clear those concrete stops you see in parking lots easily. I'm a pro mechanic and I have seen the poor reliability and outrageous repair costs of air suspension. If you read the threads on this site about excessive tire wear due to negative camber, some of these guys go through tires in 8000 miles! The coil suspension does not have this problem. My tires with 10K are wearing perfectly even, they'll go another 10k easily. I made mine coils.
Nice choice on the Obeche (I have matte) and tan interior. I have seen that on blue, it looks great.