Go with the Pinnacle products. I have a 07 G35 (black) and Pinnacle is excellent. Also agree with FloridaNative about using Klasse products. They both work wonders together. Good to have a PC 7424 in your arsenal too.
Order a PC 7424 and the Pinnacle Wax kit. I have a black 07 G35 and I use the Advanced finishing polish and the Liquid Sourvern. My first time using the Pinnacle with the buffer and it turned out great.