Irrigators can make a real difference to your oral hygiene and having used this for the past 5 months, I would definitely recommend it.
It takes a couple of times of using it to get proficient in how to manouevre it in your mouth without spraying water everywhere but once mastered it's very easy. It leaves a squeaky clean feeling in your mouth and I can't imagine not using one now.
If, like me, you don't always floss as much as you should then this irrigator is a must have. It's still recommended to floss too but I worry less now that I use this regularly. I visit the dental hygienist every 6 months but feel I could extend this to an annual visit. I have a couple of tiny spaces at the bottom of my lower front teeth which become visible directly after a hygienist visit but disappear again after a week or two, presumably as plaque builds up. This time though, I can still see the spaces 3 months after my last appointment and the staining behind my lower front teeth has not yet returned. A definite visible improvement which has sold me on this product.
The battery life was a slight issue for me as I got a lot of power when the batteries were new but it slowed down a lot after about a week. I love that strong blast of water feeling but it's not overly strong or uncomfortable and probably if it had a 3rd speed (it has two speed settings) I would use that! Although not recommended for this irrigator, I am now using re-chargeables which seem to give a consistent power use for much longer before I have to change them.
Irrigators are hugely popular in the USA but not so much here - even my dentist didn't seem to know much about them but surely that will change as more people try these and see the benefits.