Mahogany vs. Ipe
I'm considering building a deck out of Ipe due to its durability. However it's expensive. What about mahogany? You don't mention it in your article on decking material. Is it durable? Pros and cons?
Re: Mahogany vs. Ipe
You could use Mahogany if you wanted but I don't know that you'd save much $$ instead of buying Ipe. You might consider cypress, cedar, or redwood if you're looking for weatherproof. If you have a REALLY big budget, you could always consider teak but it'll cost you.
On TOH the other day, they were building a deck in Austin, TX. Instead of using Ipe, they used a synthetic that looked reasonably like Ipe. I didn't catch the brand name but the guy who was talking to Norm about it, had a TREX shirt on. It may have been TREX. You might want to do a little research on TREX though. I've been reading about some suits against them because the materials were breaking down.