Obviously we think Smart Pots are the best, but don't take our word for it. Here are some studies and write-ups for your enjoyment.
Oregon State University: Root Pruning in Fabric Containers
Texas A&M: Advantages of Smart Pots vs. Conventional Containers
University of New Hampshire: Winter Survival in Fabric Containers
Wall Street Journal
National Gardeners Association
Fabric Planters Extend Product Lifecycle at McDonald Garden Centers
The Retail Benefits of Container Gardening: TLC Garden Centers
Growing Greenhouse Tomatoes in Containers
Filling the Cart: The Benefits of Container Gardening for Retailers
From Novice to Expert, Container Gardeners Are Driving Retail Demand
A National Expert Weighs In On Smart Pots
Spencer's Lawn and Garden Center: An Urban Gardening Outlet with Deep Community Roots
Smart Pot® & Big Bag Bed®: The Perfect Raised Bed Planters for Retailers?
The Benefits of Adding a New Category to your Shelves