There are some tropical hardwoods that are similar in cost and just amazing. My deck is Ipe (pronounced ee-pay). It's 3/4" thick and much more rigid than 1 1/2" plastic wood. It's commonly used in marine environments, and is almost impervious to water. It'll grey out in a year or so, then just quit changing. I slap some sealant on my every three years just to maintain the brownish color.

I had some leftover boards buried in the dirt for six years in the backyard that I stumbled on while cleaning up a few weeks ago. Once I knocked the crap off them, they looked just like the day I tossed them out there.

There are two negatives from my perspective. It's a natural wood, so some boards are going to want to warp. This stuff is so amazingly strong that when it wants to warp, there's almost no stopping it. I bought a few extra boards so I could replace the warpy ones when they appeared, and that worked out fine. It ended up being 5% or less. The second negative is that it creates tiny, very strong slivers. If being able to walk on your deck barefoot is a desire, move on immediately.

It cuts about like maple, but it's only 3/4" thick so most any chop saw will make short work of it. Oh, and it's heavy. Really, really heavy.