For me these are an absolute bargain! https://www.giamoto.com/product/aprilia-rsv4-titanium-rearset-kit/
I've got the exact same ones but branded "Austin racing" but made by gia moto and they are superbly made, I love mine. I like the black Gilles ones also but they are loads more money and I would always worry about boots ridding through the black coating.
The gia moto ones will also take the original brake light switch with no modification, I know some rearsets need you to faff about with different switches.