No, I do not. The reason why there is little support for bit rates above 320 is that higher rates is higher than that defeats the purpose of an mp3, just go lossless. mp3s remove sound information to make them smaller with little to no listening loss. By the time you reach 320 even a child can not hear the difference between that and the real thing. By 25 you have lost the ability to hear above 18Hz while a child might be able to hear 22KHz. 320 is over kill for a 25 year old. It would be smart to listen to music of different bit rates and figure out where you max out. Or you could just go lossless because since you keep everything you do not have to think about it.
