I have a 12 foot two man ODC 1220. It served me well, but it isn't the greatest for what I have been using it for. The tubes are single bladder and the frame, although it has held up--is a little weak. It's been on every river over here on the OP and has given seven years of fun and it is still in great shape, but it's time to get into a more beefy cataraft (pontoon). I'd love a DB, but being an Arizonan, I was born without good rowing skills. The pickles I've gotten myself into would have been disasterous with a DB. I liked the ODC for an introduction cataraft, but in my opinion, the rivers up here need something more stronger. The ODC is a little loose in white water while the other products have a much more sturdy feel to them. It's great on lakes and calmer rivers, but not rated for waters over Class II. However, I've shot all the OP rivers that are "shootable" and it has held up fine.