I am not a pro, but if I am looking to do a one step polish and then straight to wax, like Black Bart, I also like M80 Speed Glaze. I have been using it for several years.
If I am looking for an all in one slight polish/wax product (cleaner wax), I usually reach for Meguiar's M66 Quick Detailer. I really like this product. It will remove some light swirls as well as leaves behind a nicely waxed finish all in one step.
I have not tried any of the
PB polishes yet.