Sorry, but I have to take umbrage with that. How can an individual's opinion on what is or is not fast enough or, more importantly, fun enough, ever be considered fact? Yes, I have the best of both worlds, but if the 911 was to go (and it was up for sale for a good few months) then I'd only have the MX-5 and that would've more than satisfied me in terms of driving experience.
If a car needs masses of power to be fun then it's not a very good car, simple as. An Elise S1 will struggle to be any quicker than a diesel Mondeo, but I'd suggest that the Lotus is about as much fun as you can have with your clothes on when it comes to cars.
If you want to be like that, then 370 offers very little: It's heavy, makes a terrible noise, and on the roads will be left for dead by an RS Megane. Why spend £30K on a car that doesn't offer the full experience?