One of our boats is a maxxon 14 raft, about 6 years old now, we have had it for 2.5 years (got the thing used with a salmon river frame, rear rowing frame, 2 oars, k-pump, and some other goodness for $1000 after only being used about 10 days or less, mostly got it for the accessories). Works fine, but showing the very first initial signs of glue problems on the seam tape. No leaks yet. Probably has a few more years left. Maxxon has been making sport boats (i.e. zodiac style) for a very very long time with good results, so they do know how to glue. Just be aware, they are glued and will have a limited lifespand as such. I have some 12' maxxon tubes and they work fine. Haven't been on the grande though. One thing I really like about maxxon, is you wont have to argue with a maxxon rep about the quality of their product, they don't spam all the whitewater boards.