Car changing is a complex mental process.
In my early days, the shortest time I kept a car was six months, and I changed every twelve to eighteen months, driven by the need to improve from my current car, and never being satisfied, along with poor purchase choices. With the benefit of hindsight, most of my early cars I should have walked away from.
Later in life I was much more careful and my usual tenure became over ten years up to twenty two years, which is my current record.
It's primarily about choosing well, and being satisfied. Careful fettling will head off a lot of niggles.
In Peter's case, there will be no more Aero Plus 8's It's a rare limited edition desirable car. Whereas all things being equal there will be a lot more Plus Fours and Plus Sixes. When you rattle all the issues up together, I'm not sure there's a clear cut choice.
If I was looking for an Aero, I would only consider the Aero Plus 8, and I would probably chose that over a CX car.
Right now, the only model I could be at all tempted by would be a late 3.7 Roadster. Because that model ticks my boxes more than any others.
But I don't see the sense in spending another thirty plus grand on top of my current Roadster.
