We Americans we don’t compromise ;WootThe Reefer xl and above feature marine grade plywood with an HPL coating. I don't know what material would be better for building stands than that.
One thing I think most people miss is that all these companies are hitting a price point. Custom tanks are great, (assuming the builder builds great tanks) but are not in many peoples budget. By the time you add up all the premium parts you can only afford a tank 1/2 the size you wanted. Back to the bigger, less premium tank that I can still make work for the next ten years. Compromises need to be made for most of us mere mortals.