I'm a personal fan of P21S.
They make several products, but the wax and paint cleanser together make a gorgeous shine. Especially on newer paint jobs (minor scratch/swirl marks from previous cleanings).
I use this on all my cars, from the Cuda , WS6, to the Mazda. Ferrari friends of mine use this alot as well, and is an 'Officially Used' wax by the Ferrari guys. Hard to go wrong considering how much they love their cars to not drive them!