Vita-Mix 36019 The Quiet One Blender
The most versatile and quietest blender here, if price is no object, and this is far and away the most expensive blender on this list, check out the Vita-Mix 36019 The Quiet One, On-counter, Electronic Touch Pad Controls. The Quiet One proclaims that none are quieter, so you know right off the bat that this is one very silent-running unit. The Vita Mix is deluxe and comes with a three horsepower motor and features 34 blending programs for virtually any blending chore you have, including hot soup, mincing and crushing ice. It will come in at around 50 decibels, and that's quiet enough to comfortably have a conversation around it.
The digital keypad allows easy selection of the function you want, and you can switch over to manual selection if desired. There's even a high and low pulse setting too for added blending control. If you are sold on the Vita Mix name, features and track record for a quality product, this may be the best quiet blender available and it comes with a three year warranty. If you can get over the question of, "Why would I want to pay so much for a blender?" then we say go for it!