This isn't scientific, and I offer no proof, as it's too subjective anyway...but I seem to get bigger, healthier rootballs in my 5 gallon buckets, than I get with my 5 gallon pots. (the buckets are a few inches deeper and a few inches narrower than the pots) Plus, the roots seem to love the lower regions of the bucket. (the deeper the better...?) Just something I'm keeping an eye on lately. :thumbsup: