Yes, the profile of implant makes a difference in the appearance of the cleavage. Which one would be better for you requires more information to answer. I think some patients assume the higher the profile the better, but this is not true. The implant profile is just one of many factors your surgeon must consider when choosing the best implant to meet your goals. You are better off showing the surgeon photos of what you would like to achieve, and then letting the surgeon use her/his surgical judgement to determine which profile implants will get you to your goal. The higher the profile, the narrower the implant, for any given volume. In many patients the moderate plus profile implant gives the best cleavage, while the higher profile implants give the most projection. Other factors to consider are your current breast shape and volume distribution, current cleavage or lack thereof, width of the space between breasts, diameter of each breast, overall frame configuration (does your breastbone stick out farther than the rest of your chest, or lay flat with, or cave in), current breast volume, whether or not you need a lift, how dramatic of projection you desire, what your goal size is, etc. Also, for revision cases, pocket modification may also be in order, and this too would affect the cleavage appearance.