This grow might not be a fair measure of the 30 litre Airpots, given all the other issues I have had in this grow.
In my previous grows, I used the Airpots, and I liked them.
The root mass is fantastic.
I haven't had an opportunity to do a true comparison, with the same strain being grown in both, as an A/B side-by-side.
That might be the only fair way to draw any conclusions.
Having said that - do I think they're offer value for money over normal 30l pots?
Probably not.
Afterall, these are autos with a short growing cycle, that go germination to harvest in 60-70 days.
Maybe you'd need photoperiods, with a longer life cycle, to truly see the benefit of air-pruning?
Or maybe even Auto strains with a longer life cycle.