I like the portability. the fact that it is rechargeable & that the charge lasts so long but it is awkward to hold. It often creates a mess & my shirt sleeve often ends up wet. I have to fill it at least 4 times to complete the job.
I was given one of these a few years ago for a gift and then it just stopped working, I was very disappointed. I did buy another one and thought I'd give it another try. I do like the fact that the accessory tools can be used on the old or new flosser.