You have gotten your priority wrong. If you want to play rock or metal, you should be more concerned about getting the correct distortion or overdrive into your amp. The choice of tone capacitor can come a later stage. There is no set rule on what cap value is meant for what genre of music.
If you are concerned about getting the right tone cap for yourself, you are better off using trial and error than asking for people's opinion on what value to use. One chap likes a 0.0223pf cap while another will like a 0.047pf cap and the last guy calls the first two idiots and says that real men only use volume controls.