Yes! You want to look at the quality; the production of ORP and pH; the features and options; the warranty; and the company who is distributing the systems. The high quality machines provide a 5 year warranty; the machine should produce a minimum pH of 10.5 or better; the ORP should be at least -330 or better; and find a company that has been distributing at least 6 to 10 years or more so you know they will be there to service your warranty. We have heard of machines that came from small companies that had not been around for long and the people could not get warranty repairs or even filters, so there machines became useless. Also, look for features like Mesh plates; SMPS technology; dual filters; and at least 4 levels of alkalinity.