Oh Boy... you and I have different tastes for sure Dharma!
I don't like Yukon Golds...
They are just OK when roasted but they get way too glutenous when you make whipped potatos...
They come out almost like a paste...
I prefer a mixture of Eastern White or Red Potatos, mixed about 3:1 with a good Idaho Baking Potato...
The Eastern potatos for flavor and creaminess, the Idaho to add fluffiness...
mix with sour cream, chopped chives & mashed roasted garlic! and real UNSALTED BUTTER!!! YUMMMMMMM!!!
S&P to taste...