Any recommendations on the best (highest quality) brand of clear-view screen to install in a centre wheelhouse window?
If I'm reading your question correctly, 3M Crystalline is about as good as it gets when it comes to clear film.
The latest Vkool is very good too for a clear window film...….but both will look blotchy with polarized sunglasses on in some places/angles.
Interesting query, I've not noticed a clear view in use on any new construction in years I've had two "Speich" units on a large conversion yacht that had been in service for decades without a failure nor leak. I do know the Speich clear views are the gold standard and are expensive for what seems to be a simple design that hasn't changed in 75 yrs. Many other good quality screens being manufactured but I cant attest to the quality.