Infrared Saunas

Has anybody here had experience with Infrared Saunas? Could you recommend a brand to me? I am considering purchasing one of these.

My Dad bought the one Dr. Sherry Rogers suggests in her book Detoxify or Die. I do not know the brand right off, but I will find out the brand name. I think it was pretty easy to assemble and he loves his. My Dad is 74.