Meguiars D10101 Shampoo Plus car wash is my go-to for exterior, and their D10101 all purpose cleaner for damn near everything else. That stuff is magic. Also I love their D16101 Non-Silicone Dressing for any wheels/trim dressing you need to do. Leave it on for full shiny look, or wipe with a rag for a smooth satin look. Their Detailer series stuff is quite good, the "gold class" is generic parts store weak sauce. Outside of that series from Meguiars, I can also recommend 3D products, but they're a bit more $ and usually are so concentrated that a personal use item would be a lifetime supply.
-Lloyd