I think the OP just needs to go for test drive in few cars
It depends what you want to put down as an desposit and how much per month.
I have the pre facelift A45 for last 20 months and in my eyes it has brilliant
If you buy an A45 or RS3 you go with eyes wide open on runnning costs.
I have been to couple of meets with members on the forum and it is ballistic and I have not got bored with it at all
And if you think is like normal A class then you wrong
Performance figures are very consertive
Evo tested my car 4.3 0-60 and 0-100 in 10.5
For car that is just over 40,000 that is fast and with AWD then it is an everyday car.
I am looking to replace it with a face lift version in future
I did not go for the Spoiler i went for stealth no one bothers you but they do hear and i like the sound it makes it

It would be boring world if like the same and my last car was GT86
Which I enjoyed but I like my A45 better
