Reeddiffusers.org and WholesaleReedDiffusers.com are the same company and sell a huge array of reed sizes and colors. Which site you use just depends on how much your going to order on which one is most beneficial. If I remember correctly, if you’re just ordering reeds, it’s better to order from the .org.
I ordered from them once last year. The black and “white” reeds. Pretty pleased with them but I haven’t ordered from anyone else to compare.