Hydro, Maybe.  Clean, No.
The primary difference between these HydroClean heads and a full-size SoniCare head is that Philips has replaced all of the bristles in the center with two little rubber flaps.  If my own experience is any indication, it's a poor trade-off.  Within just a couple weeks of switching to this new head, I'm seeing a lot of buildup on my teeth... which does not occur with the original style heads unless they are overdue for replacement.  I'm switching back!
Rating: 1 stars