Looking at buying a portable black tank - suggestions?

Check out the new Rhino totes. Bigger wheels (less noise) and all the attachments you need. I think they come in 3 sizes, something like 18, 27 and 35 gallon. Comes with a built-in ladder hook.

I'm with Trackrig on the rubber tires. Someone rolling their tote with plastic wheels early in the morning is somewhat annoying.