BFB contains phosphate, good for root growth. Nitrogen, good for top growth and green foliage and potash, good for flower colour,and ripening of fruit and veg.
Bone contains phosphate and nitrogen, good for bulbs, shrubs, roses and fruits like strawberries.
Manures improve the soil structure and helps with moisture retention in the soil.
BFB is a good all round fertilizer, and my preference, although I'm using bone this year for bulbs to see if there's a difference and was going to sprinkle it round the alpine strawberries I've grown.
I also use manure but this needs to be well rotted down which means keeping it for a year to rot down before using on your flower beds.
Hope this hasn't confused you more, I guess it's a case of choosing your poison.