I ordered this product for at home use, not necessarily for travel, because if does not take as much counter space as the larger models. For flossing it works fine. There are a few design flaws however. The on/off button is located such that when holding the unit where it is designed to be held, it is very easy to accidentally hit the on/off button causing water to spray in unintended directions. The water reservoir is difficult to remove and replace, especially if your hands are wet at all, which they naturally are when using the product.
I can only review this by comparing it to my countertop model. It is great if like me you have no counter space in your bathroom! But, it takes longer to floss due to the smaller reservoir that needs to be refilled multiple times, and the fact that you can’t just bend over the sink and let the water runout of your mouth. Trying to use it like that makes a huge mess because you can’t really use WP-580 in a horizontal position. Finally, I miss the higher and more variable pressure settings on my countertop model.