This may be an old post, but I have a 2016 S Premium (CVT only) bought new in March 2016.
An 'S' was what I had originally test drove, and presumed that all the Corollas featured the same suspension tuning much as they had in the past.
I enjoyed the comfort and good-to-drive nature of my 2005 9th Gen CE 5-Speed, but figured the ride of the 11th gen S was indicative of the range as many cars have been getting stiffer (TOO stiff for an everyday car honestly). There is no good reason why a car like the Corolla needs a stiff, boy racer ride. None. I miss my comfortable Detroit FWD cars of the 80's to be honest. I myself and also the family had K cars, and they were trouble free, great in snow, confidence inspiring and good to drive, and very comfortable without excessive flop and float.
Well, when I had my car in for some minor warranty related work regarding the windshield wipers and their skipping at 45mph+ (and it never was rectified; only car I've ever had like that. Not safe at normal speeds on rainy days), I was given a loaner- a new, L with the 4-Speed automatic. My goodness, what a difference!
The L was much more comfortable, it was much quieter, and to top it off, was more fun to drive overall and through curvy roads. My S felt awkward and skittery by comparison- too harsh for no perceptible gain.
Interestingly, once I added the TRD rear anti-sway bar and the front TRD Strut Tower Brace (10th gen piece- bolts in and fits perfectly), my S seemed to ride more comfortably and controlled with less harshness and better steering response as well. The TRD pieces made the S feel how I believe it should have felt directly from the factory.
I know it's the suspension tuning that makes the most difference. How/Why one may ask? Why, my 15" alloy and winter tire set, that's what. Even on "little" 15's and squishy snow tires, my S is still surprisingly stiff. I would have anticipated a much larger reduction in firmness.
What I've learned is that if/when I need to replace my struts/shock absorbers, I plan on replacing the springs too and going with the softer L/LE pieces all around.
Many miles of happy motoring,
Steven