I heard that Aquapik is good for gum health, so I've been using it for over two years now! I use the AQ-310 model, and the water pressure is really strong! On low pressure, it feels like a massage, but when I turn it up, it feels incredibly refreshing. Since the pressure is quite strong, it takes some time to get used to it. I make sure to use it on days when I eat things like meat. I'm always surprised by how much debris keeps coming out even after brushing! The only downside is that the noise and vibration are so loud, so I try my best not to use it late at night. I think I'll buy a portable model next time. I highly recommend Aquapik for oral care!