well i think i can give you some advise on the range of your car list as i owned the rx8 and civic before
rx-8, it will become the nightmare, i got the 231ps one , it is very nice, fast, good handing, rear wheel drive, beautiful interior, but my running cost is around 18mpg on average even i didnt drive hard
audi tt, as your budget is 10-11K which mean you are not looking for the new model , the old tt is for lady, i always laugh out if some guy driving that
civic , no matter how fun, how good , how the valuable is ,civic is a civic.
audi estate a4, you still young rite , dont drive a daddy car
alfa gt, i told some of my friends i sold my rx8 bcoz of i have no money, cant afford the rx8 really some time im runnging 16mpg, i saw the pertol station man at least twice a week, then 1 day , i bring up the alfa gt, all of my friend saying " omg, i though you say you have no money , why you get a better car , you won the lotto"?