After a Homedics PA400H died after a number of years and no replacement to be found, we stumbled on the Thumper. Even the entry Sports model is a bit pricey, but it is a quality product supplied by a very responsive Australian agent. It has an on-off and 5 speeds. Instead of vibrating it thumps the pads up and down. It seems much better than vibrating. The agent-importer was very good to deal with. Shipping was effectively immediate and delivered interstate the next day. A really good product and purchase experience.
Well Made Product, Thumping is Better than Vibrating, Long Cord, 2 year warranty