Question about Philips Sonicare DiamondClean 9000 Series

The difference lies in the case: the Special Edition does not charge the sonic toothbrush, whereas the "normal edition" does. This means that the invaluable advantage of the travel case is lost with the Special Edition. This is not specifically mentioned anywhere. It sucks that we as consumers are inundated with so many product variants and it's SO hard to keep track of everything.