I did a little test with 2 airpots, 2 smart pots, and 2 regular square pots with the slits down the side, all using the same cut of affgooy. In my experience the square pots outperformed both the smart pots and airpots. this was in a recirculating system with canna cocoa. One thing I found difficult with the special pots was that it takes a lot more water to water them, seems like it doesnt soak down into the pot evenly as well as the square pots when hand watering. in the recirculating system tho they got plenty of water but the yield and growth was better in the square pots.
Thanks for posting your experience about the three. Did you experience any more compaction with the special containers over the plastic square ones?
I found Fabric bags have greater compaction of media versus plastic containers, and its more difficult to water the media due to the increased compaction making infiltration difficult.
I too question the value of these special containers. They're purpose is to create a robust branched root system, but I can get that in regular plastic containers with marginal root circling.