is there any brand of tub (sterilite, iris, reptiletubs.com....) that offers superior quality, clarity, melting resistance, value or anything else as opposed to the others?

also what are the best size tubs for hatchlings, yearlings, and adults respectively?
i have hear 6qt, 16qt, and 32-41qt respectively, is that about right, it just seems so small when compared to the 10, 20 and 30 gallon aquariums you see recommended alot

and finally, do your bp's seem content and comfortable in the short tubs so many rack systems seem to employ?

sorry for all the questions, i'm just building my first rack and want to get it right. thanks