A new InSinkerator was part of our kitchen remodel 2 years ago. Yes, it was quieter than the old one. BUT… the "baffle" design inhibits air from entering along with the water quickly enough. The result is your sink drains VERY SLOWLY. Better, if the disposal is on, but STILL, VERY SLOW. Food and yucky sink water backs-up until you stick a utensil (OR YOUR FINGERS) into the hole, pushing the baffle open wider. YUCK. Very poor design. I tried to drill a few extra vent holes in mine after I became frustrated enough. The baffle snagged on my drill bit and tore. It still drains poorly.

Leaving only a small opening for the water and food waste to enter the disposal may make for quieter operation, but at the cost of good drainage. It's not worth the trade-off. I cannot recommend this product. IT IS NEEDS TO BE REDESIGNED!