I know this is subjective but here goes...
I took my 2012 G37S to dealer today for oil change. My lease is up August so they didn't hesitate to bombard me with upgrading options. The only thing that caught my eye was a Q50 S model with 19" performance wheels (ENKEI?). The only way I would upgrade is if I got the "S" model.
Has anyone here driven the S model? How does it compare to the G S-model? The seats look similar but not sure what suspension refinements are included. Any input would be appreciated as I had no time for a test drive. I may just buy the one I have but on the fence right now.

 

You may want to send a pm to 'MalbecG37S'

He had a 2012 G37S and recently picked up a new Q50S...That was a few months ago and he still periodically drops in here on the forum. I'd imagine that he's had a good amount of time to make some good comparisons.

 

OK Thanks, I sent him a message.