I've just used up the last of my pots and I've spent a few hours search the web for a better pot without finding anything.
I've had the best results with taller pots than any other pots but they are being elusive. I'm currently using a mix of Rand's Aircone Pots and Anderson Band Pots. The design/build of the Rand's pots is better than the Anderson pots but they are just too short. The Anderson pots do not have a proper bottom and it takes me a while to cut out one and with my joints it can be painful.
So my perfect pot would be clear, plastic, durable, square, available in 50-100 units, cheaper than the Rand's and TALL!