Purchased for my 97 year old mom
Mom has never used an electric toothbrush..Oral B  was recommended by her dentist because flossing is difficult. She has arthritis. I purchased the replacements for her so she could try the options you provide--softer action, flossing. She is still tying to get used to the Oral B. Again her arthritis makes it difficult to hold the large base of the toothbrush. She's still working with it.
Rating: 3 stars