Electrosex is incredible, but, if you are going to do it make certain to invest in the best equipment you can get and equipment with a track record. You can google the following: ET-312, ET-232, and these are from Paradise Electro. The other brand is Folsom Electric.
The electrodes are more a personal preference. The last box I had was a Folsom and it lasted nearly 20 years. Cheap is not only going to give you a short life, but it is not as safe. When it comes to electro virtually every manufacturer will give you all the safety guidelines with the power unit. Follow them carefully and enjoy your ride. . . . . .