I use these products too, and I agree completely with Bob Hylka.
Using the black labelled Black Magic after the Step Three gets even a little bit more shine.
I also use the Storm Xtra-Shine, which supposedly gives a 3500 grit finish. I does appear to be a bit shinier than what you get from the Step Three (2500 grit), but at that level of shine you have to look very closely for the details in reflected objects to tell.
Some balls polish up easily, but others are resistant to surface changes and require more time and energy. After a little experience on the spinner, you'll notice quickly which ones shine easily and which don't.
The bad news is that Storm just dramatically increased the prices that distributors must pay for their polishes. As a result, the prices we pay for them just jumped as well. The Storm polishes used to cost around $16.95 for a quart in the on-line shops, but the prices just jumped WAY up. Look around and see if you can find someplace that is still selling old stock for the lower price.
Shiv
--------------------
He says he can shout, don't hear you.