I don't like store bought heavy ones... Kuri-kinton should be lightly sweetened and I definitely prefer homemade! I use a food processor so it's really easy!
I don't like the store bought ones, so I personalize the sweetness and consistency of kuri kinton at home.
Peel the sweet potatoes thickly to preserve their color. You can freeze this. I don't like to rush at the end of the year so I always make them before Christmas and freeze them.
Enjoy Japanese food around the world.