Review (5/5): This product is of exceptional quality!
I have used the H2ofloss hf-9 (Whisper) for the last 18 months and have been very happy with its performance. My wife and I use it daily and are very pleased with everything about it, especially the company's customer service. When I broke a small piece off the hf-9, customer service replaced the part, free of charge and did so promptly.
Because of my exceptional experience with the hf-9 and the company, I chose to purchase the new H2ofloss hf-6, Professional Cordless Dental Oral Irrigator. I have it for two weeks and cannot say enough good things about its operation. It is easy to use, much quicker to fill and floss than the hf-9. It performs the same high quality flossing as my hf-9 and am, in fact, utilizing it more, because of the simplicity of use.
I recharge it using my iphone adapter base with USB port. Very simple and convenient. I get great water pressure, using the the 5 settings for my teeth and gums. Its thorough, efficient, and easy to use. I like the convenience, efficiency, and value of this product. I highly recommend the H2ofloss hf-6 Professional Cordless Dental Oral Irrigator and plan to take it with me when I travel.