The ones I tend to like are the f/f foot scratching ones. There are a couple producers who put a mike right next to the girl’s soles so you can hear her nails gently scratching the soles. It gets a little tedious after awhile; I kinda wish they’d do a few different positions (I.e on her back, her belly, different feet positions). The girls typically aren’t ticklish at all, or maybe a smile escapes every now and then.