RS4 is just a regular A4 on steroids - design wise. More aggressive front & rear bumper, different air intake, slightly different side skirt, sporty exaust pipes & rims ... and that's it.

Adding spoilers, diffusers, other styling kit to standard design does not attract me. Yes, it can make the design better & a bit more exciting, but still ... if standard design is not sharp, nothing can help it.

Anyway, that's just my opinion. I like sharp lines, daring yet appealing design, modern lines. That's why I love flame surfaced BMWs so much while I've never really cared for pre-flame-surfaced ones - including Ms.

Right now too me the only interesting Audi design feature is trapezoid single grille with aggressive fascia. All the other design elements (side profile & rear end) seam nothing special to me. A5 looks promising because it has potential of bringing some fresh design elements which could creep in other models (eg A4, A6, A8, Q5) ... Yet I hope this time they will differentiate separate models a bit more.