Not sure what your budget is, but RS4S' go for about half the price of the 260rs'.
You can get a good RS4S for ~$10k whereas a good 260rs will set you back ~$18k-20k
You get more for your money, of course, such as the RB26 (although some might suggest an RB25 neo is preferred over an RB26 but that's for another thread) and big brakes, but $8k-$10k is a lot of coin.