Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent replacement

I purchased the Braun Power Tooth brush approximately 15 years ago. I was devistated when the power head stopped working. I was sure that I'd have to purchase a new system. I was extremely pleased with the original product and would have probably purchased a similar product. After some research on line, I found that Amazon.com had the power heads available for considerably less than a complete unit. I was pleased that the unit was sealed and new. I received the new power head quickly and have used it many times. The unit charged and works as well or better than the original. I would rate the merchandise and Amazon AAAA++++.