What Infrared sauna to buy?

First off I would like to state that I have a steam sauna which is ozone/oxygencapible. I am going to sell.

I used it for while but decided I really would rather have a Infrared.

I always do my research before buying.

I read that the Carbon is the way to go but then you have the TheraSauna saying that their ceramic is the best?

Could anyone give me some insight into this?

Is Carbon or Ceramic better?

Also there is a Therasauna rep in Reno, Nev that has some video's on youtube and she shows where the other saunas not the Therasauna emits emf's and that other saunas are toxic.

Any info is much appreciated..
Be Blessed, Raider