The ease of use is excellent. Tiny device and definitely fits description for mobility. My only complaint is the water cover. My first AirFloss arrived missing its cover. As for my second AirFloss, there have been numerous times I had to search frantically for the cover as it gets dislodged easily. Still, I'd recommend it for anyone and hope Sonicare will improve the cover design.
I really do like the AirFloss flosser but I'm not convinced that it totally cleans between teeth because it requires that you position the flosshead correctly between your teeth.
Also if you have periodontal issues, I'm not sure the AirFloss flosser will exercise your gums; Rubbing traditional floss up and down between your teeth not only cleans your teeth but also toughens your gums and thus prevents gum bleeding.
I use the AirFloss flosser daily, but will still use traditional floss every other day.
Pros: easy to use, allows use with water or listerine or other
Cons: expensive (received mine as a gift), replacement heads are expensive
water tank to small, you have to push button to clean ever tooth, not enough pressure to do a good job. it uses more water than air. i have went back to my old water pic. it was a total waste of my money