Question [Q] pls help want to flash mod tweaks

i m using grand duos bmk3 rooted....i want to know which mod i should flash-
pure performance x or crossbreed.....which version..and pls post direct download link....
can i flash both....if yes than wether they will conflict with each other....does they require init.d supported kernel...
if i flash both then what will be order of flashing first and than second....