Like many others, I found the glowing reviews on Amazon and Consumer Reports for the Waste King disposals irresistable. My Badger 1 had recently started acting up, so it was a great time to upgrade. At the time I purchased this Eco-1000 disposal, it only had one review on Amazon, but I reasoned that the lifetime in-home warranty made it a safe bet. NOTE: I purchased my Eco-1000 on Amazon from BuyPlumbing.net for under 90 dollars, including shipping. The listed price on Amazon jumped to $150 dollars the very next day. Lucky me!
When removing my existing Badger 1, I found that using a screwdriver through one of the "wing loops" for extra leverage was the only way to get it twisted off. Banging it with a hammer didn't help at all. Also, unlike most of the reviews that I have read, the plumbing under my sink was NOT a direct "plug and play" fit between the old disposal and the new Eco-1000. My Eco-1000's discharge hole was approximately 1.5" lower than my Badger 1. I was initially worried that I would have to replumb everything, but as it turned out, I had just enough extra pipe in the "T" and the old Badger "Elbow" that I could trim away the extra height and get everything to line up. This took an extra 20 minutes or so, but would have obviously been much worse if I had to replumb from scratch.
DON'T forget to knock out the Drain Plug before you connect your dishwasher hose! Of course, being a man, I read the instructions as little as possible and missed this critical step. My wife called me at work to ask me why the countertop overflow valve was pouring water out all over the place, and I immediately realized my oversight. When I got home, I unhooked the dishwasher hose from the disposal and knocked the valve out. After unplugging the disposal from the power outlet under the sink, I reached my hand in and grabbed the little white plug, even though the instructions say that it's safe to grind the plug up. Much to my surprise, I actually cut my finger on the shredder when looking for the plug - it's that sharp! Be careful. Never ever ever put your hand inside the disposal without unplugging it or flipping your breaker switch - or both!
The Eco-1000 is much quieter than my Badger 1. It's like comparing the hushed sound a fine automobile to that snarling old diesel pickup that you see idling in the grocery store parking lot. Like other reviewers have observed, there is indeed a tiny metallic "ping" that you hear when you turn it on, but with a little cold water running, you can't really can't hear it at all and it is definitely not a negative.
In the end, I'm very satisfied that I have both chosen a quality product and that it is installed well. Definitely consider the 3-bolt mount Waste King disposals over the EZ Mount disposals. I think you'll be happier with an all-steel mounting solution rather than steel/plastic.
One last thing - if you have a double-bowl sink, you'll quickly realize that the bright shiny chrome of the Waste King flange no longer matches the dingy flange of the other sink. You should go ahead and order the Waste King #4013 decorative flange for the other sink.