Bests & Worsts Reviews from Amazon

I have been a satisfied user of Prestos 12 cup coffee percolator for decades; so when I needed to purchase this smaller cup model I figured it was a no brainer. Unfortunately; I was wrong. It was the smaller verion; absolutely. And it was perfect For making smaller amounts as I had planned. However, what I did not plan on was finding that the coffee maker had changed the composition of the metal lock nut down inside the vessel; and therein lies the reason for the poor rating. This important piece which is inside the vessel and which is always in contact with the water and the subsequent coffee you will be making; is not stainless steel but is instead made of some type of inferior metal composition now. Why is this important? Because, when it is heated... It turns black and it discharges some type of residual particulate which continuously contaminates the water inside the vessel. I noticed it the first time I used the coffee maker and rinsed out the contents. There it was, big as life; the metal had begun to turn black in areas and when I wiped the inside dry with a clean cloth to further inspect this; black residue was all over the cloth. I then decided to fill the coffee maker with fresh water and this time not putting any coffee bean grounds inside the vessel as usual. It would just be clear water alone. I plugged it in and it heated the water as usual. When it was finished; I inspected the water. To my horror; there was a residue floating in the water. So, I rinsed it out again, wiped the interior dry and inspected the lick nut and my clean cloth. The locknut was blacker; having turned even more black and there was even more black residue on my cloth. I repeated this five more times. Everytine there was a black residue floating in the clean water after heating and the metal turned blacker. I dont like metal residue in my coffee. And so I emailed the company but never received a reply... As of yet. I wouldnt use this coffee maker again. Something has changed in the metal used for the vessel and its inferior and concerning... So beware.