I'll be in the market for a new deck next spring and have been looking into that no-maintenance plastic decking. However, I've heard that it can warp over time. The reason I ask is I just got back from the park where I saw a bench made of the stuff and it looked like a 400 lb man had sat in the middle of it. Although, in the decking's defense, the bench did have a poor design to it and didn't offer a lot of support. Also, we took the boy to a park recently that had a huge cedar play structure topped with plastic decking. I noticed some of the hand rails and steps were getting pretty worn. Again, in the decking's defense, this stuff was receiving more than average foot traffic for a deck. However, this place was only a year or two old. So, those of you who own or know someone who owns plastic decking... how's it holding up?