We've tested many different raised bed planters and pots, and these are the ones we like the best. They are a great way to garden when you don't have great soil or need to garden somewhere you don't have any soil like a deck. All you do is set them out and fill them with whatever soil you want, then plant and water. The real beauty of these pots is that they naturally root prune. The airflow around the roots cause them to naturally stop growing at the edge of the pot and then form a fine network of roots instead of long roots running around the pot. This means that you have healthier plants, and they don't require watering as often as well. I've found that I have to water hard pots at least once, usually twice a day. But with the Smart Pots, I water daily to every other day. Of all the fabric pots we've tried, the Smart Pots hold up the best and look the best as well.
We have 4 sizes of Smart Pots. The 7 gallon is a good size for herbs and greens and smaller veggies that don't have a deep root system. The 10 gallon is intended for Peppers & Veggies, but I also grow tomatoes in this size. The 15 gallon is intended for Potatoes and Squash, and I find it to be good for Squash and larger plants. The 20 gallon is intended for tomatoes and melons, and I like it for the really big plants or for growing more than one tomato.
7 gallon - 14 inch base, 9.5 inches high
10 gallon - 16 inch base, 11.5 inches high
15 gallon - 18 inch base, 13.5 inches high
20 gallon - 20 inch base, 15.5 inches high