Andy. collonite is the muts for protection. will last you 4-6 months with just one coat of it. Will also give a good shine only for approx 2 months so just top it up.
Collonite 476 is the wax i put on alan-g and fab1's cars back in april so will see if they reply and back up how good collonite is. 915 will give you the same results as the 476 does for me.