I chose this model for its small counter footprint compared with the previous devices I have owned. It has the advantage of not using a flexible tube to connect the pump to the hand peice, which tends to collect mold, and is nearly impossible to clean.The water tank is small, but it is easily filled and refilled using a glass of lukewarm water, rather than directly from the tap, as it doesn't fit under my bathroom sink faucet.Battery charge has not been a problem, but I recommend recharging after every two or three uses, to insure long battery life. Operating the unit until the battery is fully discharged before recharging will cause early battery failure, and it is not replaceable. The size and battery power make it suitable for travel.Jet pressure is only adjustable by changing tips. This is satisfactory, but an adjustable pressure control would be a significant improvement.