I have had a couple of traditional style tens machines before so this one is an improvement and I find it more powerful. It takes a bit of getting used to with settings but as I say it's more powerful, the unit itself is tiny and the reason I purchased the bundle with the belt is the flexibility of having the belt option in hotter months when the pads aren't always comfortable and can become too sticky. The only thing when using the belt on the leg area is the velcro is uncomfortable which I noted was mentioned by another reviewer which is why I couldn't give 5 stars otherwise I'm very happy. It will be interesting to see how well the pads wear compared to the traditional style ones I'm used to. Thanks for the speedy delivery, much appreciated.