Price! :shock:
FWIW I use to use trad waxes, like Mequier's or Collenite's Fleet wax, their paste wax having a great reputation for durability and protection, albeit not the glossiest coating going.
But I have switched to advanced polymers like NuFinish and RejeX, that put on a glosy shine and I find 2 coats to last my NE season. Unlike paste waxes though, which will clean a little as they go, you need to thoroughly prep the surface to be done with these new space-age finishes, as that is what it truly is ... a "finish" coat to the frp.
Others use wax and like that too! I like the ease of which these polymers go on, I don't even bother with buffers, less the last touch just to give a uniform sheen. And they go on fast! One low tide at the beach ... and I'm done.