After trying almost every pot available. 100% the rootball from a fabric pot is unbeatable. It is an amazing different the root you get from fabric pots.
There downside is transplanting from them sucks, to defeat that, I go straight from solo cup to 2 gallon smart pots. Grow 4' plants in 2 gallons of coco and the rootball at the end is solid, I dont get how it doesnt push all the coco out of the pot actually lol
Airpots are also very good, but there cost is just to much. I buy my 2 gallon fabric pots for $1 each and at that price they are disposable, although they are definetely re-useable if you wanted to
If youve only ever used plastic pots, do yourself a favour and try atleast one plant in a fabric pot (peferably HydroFarm brand if possible)