The most wanted decks in Seattle area are cedar decks. Cedar decks require staining; some people prefer painting. Cedar material is considered a long-lasting wood that will stay for long years if stained soon after installation. Re-staining is recommended every few years.
Composite decks do not require staining or painting, but they may need some pressure washing after a while.
IPE which is also known as iron wood is the sturdiest decking material, and is much expensive comparing to cedar or composite. It doesn’t require any kind of staining or protection and will last for long-long years.