I've built several rack systems and am getting ready to build another. I've never liked the milky translucence of Sterilite or Rubbermaid tubs and I've seen several builds using very nice-looking transparent tubs. Unfortunately I haven't found any that are current or have a current source for the tubs. Does anyone have any suggestions? Also, do they stay nice and clear or do they cloud with age/cleaning? What is the largest size you've seen available? Thanks in advance.