Knowing Marvin as well as I do I would certain that they have done thier homework and released this as a well tested product line and have no issues using them were I in the market for windows.

+1.

Good engineers and more specifically, festiduously cautious. I doubt they rushed it and it's all based on proven base material product.

Just don't ask @BlueBlob Gaming about Marvin.

They sure look awesome and fill a niche needed for contemporay builds

Windows on Washington LTD assumes everything went fine for this poster also.

I’m considering for a new build can provide feedback once I see them next week!

From what I heard these windows have been out in select states for a year and a half - I’m in Toronto so its releasing here next month. It looks slimmer, the casement cranks are slimmer and the materials are similar with additional composite added to handle higher height as casements can now go to 8 feet. I will be going with the vivid line just because there are sizes available in the vivid line that are not standard in the essential line I was considering (i.e. height on awning now available at 5 feet and casement heights).

Interior colours are black or white.