Hey tj
I use square pots primarily (and a circular if i must haha) but know a little about each.
The dudes at my local hydro store swear by the smartpots, and don't really know alot about
the airpots, but only because they don't use them so haven't been exposed.
It's all gonna come down to what works for you though dude, I tried the 3L airpot and got amazing growth, so much it outgrew the pot really because it could drink all the water I poured in in like 12 hours! It was hot so I ended up watering 2-3 times a day and was not worth my time in the end.
Don't worry, because I went back and simply bought the 12l size which I am testing during my hot months!
My final word: It is the same technology and it is a proven root technology. I prefer the airpots for their rigidity and because I would prolly get noid about disturbing the root system, but I have not tried smartpots yet, but know I've seen their results. I think they may have an advantage outside because they may not get "black colored plastic" level of hot in the open sun or something, but also keep in mind that airpots are always reusable and in smartpots their roots get stuck in the size when they grow into it and you have to wash it in the washer after a grow and deteriorate after a certain number of cycles. Still pretty much always will come down to looks and personal preference
since
I Think they're both just as messy LOL
sorry the post is a clusterf-:smoke: