It's just ok
The toothbrush is great.  Our family has been using Sonicare for years.  The flosser is just okay.  It has a very small reservoir, which is annoying.  I am also not sure that it is a substitute for flossing.  I am not willing to give up my flossing in exchange for a puff of air.  I think a waterpik would be a better choice.
Rating: 3 stars