I checked out the Essence web page. It appears their products are pretty price competitive with others. They have two choices, and the only thing I can see different is one has the copper rods and the other has wrist straps. Is one better than the other? or is the extra 10.00 you spend for the one just because it's more convienent?
I'm not expecting you to be an expert, but since you had such great success, you definitly might be.
thanks again