I'm just harvesting now with 5-gallon buckets. They worked great, but definitely limited the size of the plants. They all got to at least 6 1/2 feet tall, but they weren't very bulky. I moved from the ground to buckets in mid-June.
I would go with grow bags
http://www.gardeners.com/Grow-Bags/GrowBags_Cat,default,sc.html or large garbage containers.
I honestly wouldn't worry about the containers breaking down in the sun, unless you live in the southwest in the US. After a couple years, a container
could break down in the sun, but I
highly doubt you're gonna lose the structural integrity of a plastic garbage container in just a few years.