I just had a brief flirtation with both the Bemer 3000 and MRS 2000. I rented the Bemer for a week. During that time, I was pretty fatigued. At first, I hammered that fatigue 3 times a day with the pad, as well as hitting the chakras with the applicator device. I even went up to a 10 (the highest on the Bemer scale) once, as the practitioner recommended, but I think that tired me out more than helped. After several days, I noticed I did have more energy, but that energy seemed to be pooling in my head. It felt a little jittery and uncomfortable. Also, on days when I was really going at it with the applicator, I would wake up every hour or so at night, and wake up for good pretty early. I wasn't tired, though. I ceased renting the Bemer after a week because something didn't feel right about the energy I was feeling. When I told the practitioner I had rented it from about my experience, she said it sounded like I was sensitive, and that if I was going to continue, I should forget about the P programs, and just do 2 sessions a day at the 1 level. I decided not to do that for now. I have to admit, I was swayed by the MRS 2000's slick presentation, enticing claims and testimonials, and Bemer-bashing on their web site, and visited an MRS 2000 salesman in my area for a test. He had little good to say about the Bemer. I told him I had been labeled as sensitive by the Bemer lady, and he at first gave me a dose of sensitive, followed by 10 (it goes up to 400), followed by 4 minutes at 25. Afterwards, I felt somewhat calmer, and was able to work fairly late that night with good energy. However, I'm not sure how much of that was attributable to the MRS 2000, as I had two-timingly used the energy-giving Bemer that very morning. I visited him again 2 days later, and he turned it up a notch, giving me 24 minutes at the 25 setting. After leaving, I had an onset of achy feeling and brain fog, and he said that proved that the machine was working, as it was no doubt a herxheimer reaction. He let me try it again the next day, this time with nothing higher than a 10. I could feel this energy slightly, but couldn't say it had any big effect. I went in feeling pretty fatigued, and was feeling pretty fatigued soon after I left. In my area, the holistic practitioner offers Bemers for rent with a rent-to-own option. The MRS man does not. Neither company offers a money-back guarantee, and I didn't get a positive enough experience with the MRS to risk buying one. I would have been interested in experimenting for a longer period with the MRS, as when I stayed in the low intensity zone, it felt tolerable enough, with no strange energy aftereffects, as with the Bemer. However, 2 out of 3 times, it had no positive energy aftereffects either. I let the BMS man know I would be interested in renting if this ever becomes an option. In retrospect, as I am pretty fatigued right now, I sort of miss the energy I had with the Bemer, even if it was a little uncomfortable. If I get desperate, I may reconsider and re-rent the Bemer, but use it on a lower setting.