I hate to differ from Chris's opinion because he is obviously much more experienced than I am. My way of thinking was the opposite. The electronic suspension and LED lights among a few others were what I wanted on the street. Wheels I could've done without because I know I wouldn't see the benefit of them, but I guess they look nice. Honestly for the money I think the S should come with a slip on like the Tri used to.
For the track I would've absolutely gotten the base and used the left over funds for upgrading the suspension/wheels myself.
Expect most to come in here suggesting whatever they bought. The base guys will always say it's the best option and the same with the S owners. In the long run it's up to you and what you think is best for you and your budget. If money is an issue, I would get the base and not feel like I settled one bit. They're all great machines. The cost difference between the base and S is what I spent on my last track bike so it's not like we're talking about a trivial amount here.
I guess it all depends on what type of riding somebody does on the street (but you do have a valid point with the LED lights).
Personally, suspension is the least of my worries on the street...I never touch it. The suspension on my Triumph Sprint ST really SUCKS. It is the old style RSU forks and WAY undersprung for my 215lbs (without gear) plus saddlebags loaded etc. But I have about 25,000 miles on it with no complaints.
Sportbikes are the same way. Modern OEM sportbike suspension is about at the technological level of WSBK suspension of 12-15 years ago and it is definitely capable of handling any kind of pace people will ride on the street.
If the EC suspension could sense potholes, or speed bumps, or debris, etc and stiffen/soften based upon ROAD conditions, I could definitely see it. But instead it reacts to rider inputs (throttle, brakes, lean angle, etc)...and on the street, I personally don't ride hard enough to warrant altering anything.
But of course, to each their own. You really cant go wrong either way, it just depends on how much you want to spend.
Personally, I chose the S model for the track because I wanted the controls on the left bar but mostly the lightweight wheels (changing wheels renders a bike illegal for Superstock competition, and I wanted to keep it SS legal).