I am going to test drive both an Audi S4 and an S5 on saturday to see which one i would like, all depended on cost in a few months time. I asked on the S5 section the other day about opinions but didnt get any answers ( i dont know if this is because it is not popular?). My question here is which one would people suggest and why? I would like an RS4 if im honest but that will cost a little bit more money, is the RS4 worth the extra? Is a S5 coupe better then an S4 saloon? Any opinions are more then welcome. Thanks.