The s4's are pretty cool cars. A good friend of mine has one, however they are very expensive to maintain and you have to pull the engine to do a lot of the service. You can't even change the turbos w/out pulling the front clip and engine so you can see where the labor gets expensive. Parts arn't cheap and it is very expensive to mod an s4 and get it to run reliably.

If you got deep pockets and s4 would be a fun car, they are roomy, very nice, and handle amazing.

An evo would be my next choice, but they arn't exactly reliable when modded very much either. I wouldn't conseder the others you've mentioned, just not my taste I guess.