There is some debate as to the best corset for waist training. At the end of the day, it would come down to preference, comfort, and what motivates you daily to lace up! A comfortable corset that you want to wear daily, is a whole lot more effective than an ill-fitting/ uncomfortable corset you dread wearing. Underbust, overbust, or waspie corsets can all be worn for waist training. The most important point is going to always be comfort and fit. The second most important part of that decision is durability.