I am convinced after a few earlier posts that I should go with an air floor. The Odyssey 270AFH is on sale right now and seems to be a good dingy for the price. It is $400 less than the comparable Achilles, LSI-260. It seems like most of the Odyssey line is PVC, in fact I cannot find mention of the Hypalon model on their own web site. It does have a 10 year warranty versus 5 for the Achilles. Help!