So if you were to put an adult in a plastic tub..

What quart/gallon size would you use?

I've got a juvie in a pimped out aquarium right now, but that's obviously not going to last. I know I should move up in tub sizes through out the growing cycle so as to not give them too much room but im getting some lowes/home depot gift cards and im thinking I may just go ahead and buy a ton of the stuff I need...and i'd really like to get all the tubs now...

any ideas guys?