I made a good decision
Spa Pro 6 Quartz Stone Heater With Nonstick Reservoir
I have had this product for a few weeks now. I have used it about 4 times. So far, I am very pleased. I love the fact that the reservoir is removable. This makes it so much easier to fill and empty. It heats up quickly and cools down quickly. It isn't really big enough for a set of stones over 30 but that's okay for me as I use 20 stones at most. I would happily recommend this product to other massage therapists.