opinions on silencer/rad valve for 04 cr85r

[mc916]

Basically i'm looking to increase bottom end power and make it more rideable while keeping or improving the mid to top.I'm also thinking of having Eric Gorr port the cyl. the next time I rebuild the top end.My question is which silencer?fmf or pro circuit shorty,which one holds up the best between repackings.which rad valve Boyesan or vforce?