I have the KIX E-stim beginners kit. This is my (quite detailed I think) review. Have a read, I’m happy to answer any follow up questions. I actually prefer the pads to the probe I have for it. I think for the internal toys to be effective I need a stronger control device but with the pads it’s fantastic. I very, very strongly recommend the guide I mention in the review for info on pad placement for maximum pleasure. (I’m not allowed to link directly to it from the forum as the cartoon drawings are too graphic 
- I’ve checked with Brenna before and it’s a “no”, but it’s easy to find from a Google.)
The E-stim kits are nothing like violet wands. I have one of those too, I do not like it as I’m not into actual pain. Most E-stim kits are pleasure not pain, certainly the one I have is, and I suspect the one you have too.
If you place your pads in optimum places you’ll definitely get pleasure from it.