it looks like it would be better for you to get both and sell the one you don't want on here it might help pay for the one you like

 

Keep the RS4 bumper. I love how the headlight washer caps are flush with the rest of the bumper.

 

go with the s4

 

see orginally i wanted only the s4 bumper but after looking for 3 weeks and not finding anything i settled with the RS4 bumper, which is now growing on me but i still hate the side vents, not to mention its not OE so im sure its not gunna fit right in. the S4 bumper the guy said was never even put on a car so its brand new. im gunna try and cancle the RS4 bumper and just get the S4 but if i cant ill be sellin one on here shortly, idk which one, but one of em.

*BTW the RS4 bumper is from andys auto sport and im paying around $400 for it so if anyone really wants it try getting it through there.

 

Either way if you end up with both someone will buy the one you don't use. Good luck.