Hey guys, did you want to upgrade my first system at the moment HU: Alpine 9828rb Amp: Audio System F4-380 FS: Rainbow 265 SLX Dlx Sub: Audio System 12br am actually quite happy…aba I wanted to get my new front system..I think there is more dynmaik and so on. sub could stay, which FS could you recommend?…price for FS >35€ of the new FS could be active anne old amp..Could only need a new sub amp…would I have to make new HU worth it? thank you already