d. alone or with a partner, you just never know
I like to try new toys on myself first to get a feel as to what is best then together.
She has a drawer full of vibes for all moods but I notice she has one or two faves.
Apart from her serious vibrators we mainly use toys as fun things until we get serious with sex then they end up on the floor, under the bed, behind the cupboard or wherever they get tossed in the fray.