On another board someone told me not to use the ones with wheels since the wheel section is prone to break. They recommended the Brutes that have flat wheel bases under them. By the way, is there a difference between the green and grey brutes?
I use a Rubbermaid Vertical Gift Wrap storage bin since the floor space that I have next to the RO/DI is very tight (footprint is a little smaller than a bucket of salt) . You can turn the lid into another bucket and it comes with a hang on organizer that resembles a hang on specimen container too. Get it AFTER the holidays, they will be marked way down; they always have too many of them in Home Depot etc. http://www.rubbermaid.com/rubbermaid/product/product.jhtml?prodId=HPProd260070