Philips Norelco HQ6 Replacement Head best deal

Philips Norelco HQ6 Replacement Head

Norelco is heads, everything else is tails...
These are replacement heads for what I consider the best all-around electric razor on the market, the Quadra 7865XL. (My first Norelco electric lasted 30 years.) The razor itself is efficient-but the "business ends" are the heads. The manual says to replace them every year, but they are rather pricey. I was not thrilled by this aspect of the product, but experience has shown that you don't have to replace them that often IF YOU KEEP THE HEADS CLEAN. I brush mine out every time I use the razor, and clean the entire head assembly every one to two weeks. The major cleaning is easy: take the entire head assembly off the razor (the hinge snaps into the body) and place it in a small dish of Formula 409