 The goal of this prospective randomized study is to compare whether there is a clinically relevant difference in airway leak pressures between the Ambu AuraGain sizes 1.5 and 2 and the Laryngeal Mask Airway LMA Supreme. Parameters of clinical relevance such as insertion success rates, fiberoptic view of the glottic opening, ease and speed of gastric tube placement, airway stability, and peri-operative complications will also be assessed. 