please advise which ozonator I should buy

HELLO,

please guys advise which medical ozone generator should I buy

1.
http://www.ozonatedoilonline.com/catalog/item/3630004/4617147.htm

2.
http://www.plasmafire.com/


I have not a very big experiance. I need medical ozone generator but the price is important and the quality also.
I would like to use it for longer than one year.
If somebody has knowlage about this please share with me. It is easy to spend money and then regret. Both generators are not cheap. Please advise.
Thank you and regards, Tweet