Here is a photo of 4 prong vs 6 prong. (care of DancingFire from a search I did). Honestly, I think it''s personal preference. Can you try them both on to determine if one was too high for you; you may be surprised?
They''re both absolutely beautiful, but I love the detail in ring A. I''m a sucker for detail like that. Ring A would sparkle so much in the sunlight because of all of the tiny diamonds.