http://www.organize.com/storboxclear4.html I prefer Iris because the interior is smooth without grooves and channels such as the wal mart tubs. On a side note mine are in racks so i do not use the tops.
Im with you, I preffer Iris tubs. Sizes dont change often and smooth inside no grooves deff a plus.. I get mine from my Ace Hardware store they will special order any size I need...