I agree with ARCTIC, I have a '13 STS SE5 and I am very happy with it! I rode a F3S at a DEMO Day ride and did not like the foot position. For me with short legs, bad knees, and 2 new hips the foot forward just was not good for me, the STS is a perfect fit. I had the 2014 ST air intake panels installed to correct heat issues. I did have the BAJA-Ron sway bar and billet links installed, which fixed handling issues, since I ride solo all the time I do not see any need to change front shocks.
Which ever Spyder you choose, may you enjoy it and ride safe!!!!