Griot's is what I use.
I also polish and then wax. I detail cars on the side. So I Clay Bar, then polish & wax.
My Big Red was already pretty nice when I bought it, so for a good before & after pic, I'll use this red Miata.
I used it on my Colorado too, it did wonders!!! Of course this was after it was rebuilt
The day I got it back, she got a good polish job & detail.