My husband and I are both very pleased with the Blushield portables as well as the Whole House Plug-In. We received the Portables first. I immediately turned mine on, put it in my pants pocket and felt circulation in my spine where my disk has been herniated for a few years. I was stunned and elated. On the first day my husband took his to work, he found he had more energy and mental clarity. We both wear ours every place we go. When the Plug-In arrived, we also noticed a difference. We felt more relaxed. And one of our cats had been biting herself on her back ever since we adopted her last year. It has been heartbreaking because we feed her well. She stopped biting herself.