what do you guys think is better at getting food that's stuck between your teeth out? I just switched and feel that the waterpik isn't doing a good enough job but then when i floss after using the waterpik there's nothing left between my teeth so i guess it is. Any study done on this? does anyone have any references? also what's better to floss first and then brush or to brush first and then floss? any studies done on this? thanks for your replies.