To be hobest if your mk5 is 370 a rs4 wont have the legs below 140...so out of budget and to be honest the RS4 looks tired now imo, rs5 and S5 etc make the rs4 seem costly imo again....
Im in the same situatuon, i went out in a mates evo 8 the other week, was running around 440bhp and was a great car, handled well, sounded good and i did like it, he took the rear spoiler off and it was black, was lowerd a tad and looked pretty stealth, good car and id have one over my eddie but again, its the cost getting it to the power and diffs etc...pros and cons pros and cons!