Zaino Z-2 & Z-5

Am I correct in thinking that the Z5pro is more for people who DON'T correct their paint? I mean the point of using it on darker colors is to fill in the swirls right? So, if my car is perfectly corrected already with no swirls at all, should I JUST use Z2pro for the lsp as protection, and not even bother with Z5pro right? Besides, isn't Z2pro better looking than Z5pro?