For professional results, I've been using Wizards finishing products for many years.

The Meguiars products are all filled with petrochemicals, which to me for various reasons including performance, is unacceptable to use as a DIYer.

The final shine and protection by Wizards products is superior to Meguiars, as well.

We use the Wizards products on all our stuff, new and old, fiberglass or paint.