I took delivery on my AT4 in late March, and I've been using Shine Armor ever since. I found it on Amazon and it had one of the highest ratings for a product of this class. This stuff really, and I do mean REALLY, brings out the luster and shine in every surface of your vehicle - including the paint, glass, and window trim. I can't speak highly enough about this product. I will never have to search for a ceramic detailer ever again... so long as they keep selling this stuff.
It does dry quickly in the sun like all chemicals, so it's best to use it in the shade. I've also used it as a waterless cleaner too. I also recommend some ultra-fine microfiber towels from Walmart. They sell them in packs of 8. They're light gray and a navy blue in color. They are equally as fantastic as the Shine Armor.