I recently learned about Griot's Garage products. They are sold brick-and-mortar at Advance Auto Parts, and online at many Internet stores.
I washed my car the other day with everything they sell. Wheels first with their wheel cleaner. Then I used their clay with their impressive Speed Shine product. After that, waxed with their Best in Show wax. Followed with Speed Shine polish.
I also used their tire detailer, and their rubber product for the nasty stuff Ford uses on their window seals.
The clay bar is excellent. Larger than Meguiar's, and it was fantastic. Paint is smooth as day one. :)