Have a red Yukon and just waxed a few coats with Meguiars Gold liquid wax over Meguiars #3. Nice shine, but is there anything better? My Blitz wax should arrive shortly.
Have you considered a sealant like Zaino, Klasse, or Blackfire? Many have had great success topping Klasse and BF with Blitz, P21S, or Souveran. A sealant really brings out a show car, deep, reflective type shine. Then you always have the choice to add the carnauba over Klasse or BF for a wetter shine. (It's not recommended to wax over Zaino)
P21S wax is suposed to be very good, slightly better than Blitz in terms of shine and ease of use. Also, S100, the motorcycle version of P21S, has the same exact wax for $15, thats ten bucks cheaper for the same wax.