Theories on pot sizing?

I don't see any detrimental effects after moving around fabric pots...

Re potted again today. It's been almost 2 weeks since my first (last) re pot, but the plants are growing faster then I had expected. Now they are in 6 gallon pots which I am hoping will be their last. I'm feeling like a believer in the re pot strategy and will start smaller and repot more often I think in my next grow.
thanks to all who have posted on this thread!