To be honest, the vast majority of you looks from a detail will come from the prep stages, and only the last 5% really will come form the wax you use... and at this, its very subjective as to what wax people perfer in terms of looks.
P21S wax for me gives a very "shiny" and sparkly finish and lets flake shine through nicely. Easy to use, but I have experienced poor duability from this wax. Nice finish though.
Nattys Blue - unlike the P21S, this wax contains oils in it as well to wet the paint to get a deeper looking finish, and it works well at this. A lovely finish from this wax, I really like it. Not quite as wipe on wipe off as the P21S, but certainly not difficult to use. And better durability in my experience from this wax.