Some folks report that 303 streaks...but it's because it was used incorrectly. 303 needs to be "buffed" with a dry cloth to avoid streaking and enhance longevity. (Dirty streaks are often from too much product, no buffing, and a dirty surface to start.)

303 will darken the surface, and protect it better than any other product...plus it's water based which is safer than a silicone product.

For the record, Meguair's #40 contains silicone.

I assume the car got a new vinyl top? Don't dress it with anything. It shouldn't be shiny anyhow. It's a huge area to dress and folks tend to apply too much to the top..and then all kinds of dust, pollen, etc stick to it. On my cars with new vinyl tops, I've never used a dressing.

You are welcome to look at my top, try 303, etc...just gimme a ring.