I still use the Theradome twice each week. I don't think it provides any benefit , but I also don't think it causes any harm. The plan is to use it until it stops working.
I still receive the occasional email asking if I believe the Theradome helmet is worthy of a purchase. Current opinion is no , save your money. I paid less than $400 and would feel cheated if it wasn't for the experience of running this blog and interacting with you all. .