What is the exact criteria? Cabrio with price of $125k?
I assume since you are looking at verts, that all out track performance isn't your goal.
I would add pre-owned 997.2 TT cab and possibly the AM Vantage roadster (used) to the list.
If only considering the 3 options above. Then 991 S for sure. My buddy just grabbed a (new) 2012 GTS at a nice discount, however he feels like its old already next to the 991 S. Obviously a great car however.
M3 (gone but not forgotten)