Popular Mechanics (click title above for the link) has a good article on the various options for decking material. I’ve made decks from three of the four mentioned (pressure treated, fir and composite) and my experience matches the reporter’s. I no longer build decks – or I haven’t in a long time – but Rick Crossman does, and his company, Archadeck, is here in Old Greenwich. Give him a call (978 – 9050) and he’ll give you prices on all of this. If you can’t sell your house and you’re going to stick around for awhile, you might as well enjoy the view from a new deck.