I repotted a whole bunch of my mango trees today into 10 gallon Geopots.
I found that the roots were healthy and fibrous. Many of them stuck in the bottom of their fabric pots. Worry a bit about breaking some of those roots during replanting. Hopefully they'll regenerate quickly.
I placed all my mangoes outside in the shade, in hopes of getting them to eventually adjust to full sunlight. I also wanted to torment the fungus gnats and hoped that being outdoors would expose them to natural enemies and the wind.
I've also ate a case of Kent mangoes and currently trying to germinate the seeds.