I am very much a fan of 600s done a few track days on a K7 GSXR a few years ago and have owned both a CBR600RR and R6, they’re flickable and you can get on the power quicker, that said the latest 1000s are just as agile and have an amazing array of electronics, the sad fact is pretty much all the development has gone into the 1000s in the last few years. The 2015 + R1 that he’s got is a phenomenal piece of kit, I completely agree it’s overkill on the road-although I’m one to talk but on a track the chassis and electronics come into their own, not just for top riders but for us mere morals too, I’d still say the RSV4 is my favourite bike I’ve ever ridden in a track. As for the colour thing, green bikes look great, especially the older Kawasaki’s of the 90s-love the ZXR750, although- red looks pretty good too .FCC2D065-B896-47F3-8129-3C4A2C569CFE.jpeg I think you’ve just won the cock wagging contest with the Duc! If I were to go up on capacity it would definitely for a v4! RSV4 + SC Project/Austin Racing = heaven Honestly the RSV4 is one of the best bikes I’ve ever ridden, I prefer it to the Panigale in some ways, including the sound!, never went for an Austin Racing system on mine, they are a bit too loud!, it did have the benefit of coming with a full Akra system when I bought it though!.