DURABILITY AND RELIABILITY
20 years of selling windows and doors to luxury projects throughout the Caribbean taught me a warranty is just a piece of paper. Engineering Quality and does the manufacturer stand behind it or weasel out of it?
How long has a manufacturer been in business? Far too often I've seen new up and coming cheaper products come to market and be nothing but problems and not stand behind a written warranty.
Maintenance, maintenance, maintenance! Properties within 3 miles of a seacoast have different criteria and often specify documented maintenance MONTHLY. Clean them just like your luxury car, they probably cost more.
There are a lot of factors to consider when choosing your windows and doors, I can help you evaluate them free from dealer and manufacturer biases.