I had a B8 S4 before the Cadillac (brief stint with a EcoBoost in between, had an Evo 8 to satisfy my speed craving). I'd consider getting another one of those, I loved that car but always liked the look of an RS4 more.
Not a lease- bought it. ATSV's are like 70k, definitely can't afford one of those right now. I'd say my max is $40k (which there are RS4's for with under 75k miles).
I get it. When I got the ATS, I had the Colt to compliment my speed. Now that I've gotten rid of that, I'd really like to get a fast daily. My other thought is to mod the ATS- I can get 350whp for under 5k (277 crank stock).