I have heard good things about both of those units but I do not have personal experience with either.
I do have personal experience with the Nature Kleen and Travel Kleen by AquaSun Ozone. They are both very good, portable, air-fed ozonators designed to ozonated water. They even come with the diffuser and tubing.
You can find them a lot of places online but you can also find them on our website which can be found in my profile.