jrf05, what kind of buffer do you plan on using on the car? What compound and/or polish? In all honesty, the wax you select is almost inconsequential provided all the rest of the steps are done properly - 90% or more of your gloss comes from proper prep and the wax or sealant is really just the final protection. Yes, different waxes or sealants can slightly alter the final appearance, but then you're getting into a highly subjective realm; what looks great to me may not be your favorite.