You sound just like me Alan. I've moved on far too many cars for the wrong reasons and plenty for the right ones too I might add!
I don't think that perfect car exists, they all have pluses and minuses, its just down to weighing up the whole package and getting the sweet spot right.
I don't think any of my pals believe me when I say this RSQ3 is staying for a long while.....but that is my intention.
It really is greater than the sum of its parts
And the thing is, some just suit you and some, despite getting rave reviews just dont. I had a lovely (petrol) SQ5, did everything I wanted, but I'd always had a dream to have an M car, and especially an M5. When I saw the last of the non Comp M5s for sale at silly money I jumped. And then got rid of it after 11 months! It wasnt the cars fault, it was great - but a saloon didnt really work with a dog who was with me a fair few long journeys. it was big in car parks and in slow traffic / in town and a bit raw and racey when I just wanted to potter around....
So it went and I replaced it with another Audi, that sort of split the difference a bit. And now I am very happy and plan to keep this one for a while....
But we always say that!