There are currently six different shapes and/or sizes of CoolSculpting applicators. When treating the abdomen, you are generally dealing with the CoolCore and the CoolMax, which respectively, are likely the “small” and “large” applicators you are referring to. It is difficult to say whether you would benefit more from two “small” applications versus one “large” without an in-person evaluation. In some cases, using multiple “small” applicators versus a lesser amount of “large” applicators allows for a more customized, sculpted result. However, this will vary depending on the size of the patient, how much fat is present, and how the fat “sits” on the body. Theoretically, both recommended treatment plans should cover about the same surface area, and you would likely get similar results with either. Something to consider is if either practitioner offers the new CoolAdvantage applicator, which provides for a shorter, more comfortable treatment, and minimizes post-treatment swelling and/or tenderness. Do not hesitate to contact either practitioner and ask more questions regarding their recommendations, or perhaps even get a third opinion. Best of luck.