Q: What's the difference between the Life Water Ionizer SMPS power supply and other power supplies?
A: The video below tells the differences between Life Water Ionizer SMPS power supply (or really any SMPS power supply for that matter) and a Linear power supply, as well as the pros and cons of each type of power source. Both do the job fairly well and I don't find there to be a lot of differences when it comes to performance - despite the attempts by marketers to make the difference to be a major factor. But since an ionizer is an expensive item it's probably worth looking into.
More commentary after the video...
SMPS is less expensive to make and lighter which has made it a very popular thing for almost all computers. It can also bring the production cost of Water Ionizers down, although it's probably minor since it's really the titanium and platinum which makes the majority of expense in an ionizer.
Kangen uses Linear by the way which provides a more consistant pH and ORP.