FWIW I had a similar dilemma(?) recently, I was looking to sell the Fiesta ST (Great car) for something a little less practical and quicker... my list
A45 AMG (Yellow night edition thing)
TTRS
M3/4
All very capable cars and the interiors are incredible, the Audi interior on the newer models is great - the merc similar really... however and its a big one, for me they were just too soft, they dont really offer any driver involvement - the TTRS I had waited to drive for over a year and was dead excited, sounds/looks great but its a let down from a driver perspective (for me anyway), massively fast but feels over servo'd and 'safe'... probably supposed to, i knew I would get bored.
So I changed the options up and looked at the new cayman GTS (previously owned GT4 and a GTS) and a 370z (given Nissan want to give me 5k off one)
Porsche was a great car but not (imo) worth the 40k more than the Z they wanted.
Tbh I think most people would be happy with any of them, all cracking cars but it does fall down to personal taste good luck