And...let me bring this thread back from the dead!!
I've been using the Meguiars poly wax and I am really happy with it overall.
That being said, my car unfortunately had to weather an outside stay in glaring sun and high humidity this past summer and I've noticed what appears to be acid rain damage.
I've used rubbing and polishing compound and a small DA buffer, but it just doesn't seem to have enough "cut" to get down into the clear coat enough to get rid of these patches.
I've never used a clay bar, would this be something I could try to get rid of fine swirls as well as these patches of, what I assume to be, acid rain damage?