There was another 1 Star reviewer that talked about the "title wave" out of the drain when he turned it on. I didn't see it the same way when watching his video. That can happen from time to time with any powerful garbage disposal. It's just physics. You know.... Newton third law of motion? For every action, there is an opposite and equal reaction. A one horsepower garbage disposal creates quite a bit of force. If it can't shoot the garbage down that little 1 1/2" pipe fast enough, it's gotta go somewhere. I typically cover my drain with the cleaning brush before turning on the disposal.
I have attached a video of the first-time run of the Moen A1SPC Waste King Knight A1SPC 1HP Garbage Disposal. It sounds louder in the video than it did in person. I think it's because I put the camera close to the sink, which made it kind of like being in a hall. Regardless, I didn't want to alter the video to make it appear something it's not.
The Moen A1SPC Waste King Knight A1SPC 1HP Garbage Disposal was easy to install. I did have to modify my drainage pipes to accommodate the longer disposal. If you're not handy, check the measurements before you buy to make sure you have the clearance. Most drain pipes are at the back of the sink, so usually not an issue. Mine are dead center. I also removed their electrical cord because I have a hard wire (Romex) under my sink. It was a bit of a challenge to get their cord out because of the grommet that held it in place, but that was my only real hurdle. I also left all the mounting equipment from the InSinkErator in place, which made it a very easy install.
The Moen A1SPC Waste King Knight A1SPC 1HP Garbage Disposal comes with a very nice looking drain flange and mounting equipment, but it had a chrome finish, where my sink is stainless. The new flange would have stuck out like a sore thumb. So even though my current flange says InSinkErator on it, I'm okay with that because I'm pretty sure my guests aren't concerned about what's imprinted on the drain flange.