The planters are very good quality and hopefully will work for many years. My biggest issue with them has been mentioned on this site. There are three internal compartments and the middle one does not have a drainage hole. I had to use a drill and an oyster knife to make one myself - a lot of work! The other problem was that the planter came with the exact amount of hardware, but not all of it was milled well. With the four planters that I purchased three screws and nuts would not fit and there weren’t any additional ones to substitute. 
The last issue has nothing to do with the product. My deck has cable railing so the stabilization bar had nothing to sit against. I screwed the top brace into the wooden handrail. It seems to be holding well, but time will tell.