This really comes down to how much you sweat and how much freedom of movement you prefer behind the joint. A full sleeve provides more compression and can help keep the joint warm, which some people find helpful for injury prevention. However, the cutout version is much more breathable and prevents fabric from bunching up when you bend your leg fully. If you are undecided on the best silhouette for your dancing style, you can compare the various designs available at https://queenwearofficial.com/ to see which one fits your needs.