I'm still considering getting a TENS unit, but I've only tried it twice at PT, once with the setting for acupressure (I guess that's the low-frequency, pulse setting), and once at what I guess is the more usual high-frequency setting. I'm not really sure whether or not it helped, but I can see where it might help if I had a chance to experiment with the settings and placement of the pads. To those of you who have TENS units, did you find it worked for you from the biginning, or did you have to experiment a little? What settings ultimately worked for you? The unit I used had pads with adhesive, so that you didn't need any gel. The pads can be used 10 times, according to the PT. If you have used a unit like that, how much did replacement pads cost? I'd really appreciate any information you can offer. Thanks in advance. --Laura R.M.