They are great the 3 gallon size are a nice due to size. That being said you have to be really slow if hand watering or you can lose a lot of nutrients down the bottom and it is hard to use a catch tray with soil less mix HIGH POROSITY. But once you slow down they work amazing. I have used my fair share of smart pots they work great. There is another company that makes them stateside airpot that are less expensive there name eludes me right now though. i use three and five gallon airpots depending on the strain.