"Hospital grade" plugs are a large part about hard to unplug. they are hard to plug in and I don’t think they will sag.
The only difference between the Hubbell HBL 5362, 20A, Extra Heavy Duty outlet and a Hubbell 20 amp extra heavy duty hospital grade outlet is the hospital grade outlet has a beefed up equipment ground contact and the green dot on the face plate. Downside of most, maybe all, of the Hubbell hospital grade outlets manufactured today have nickel plated contacts and a galvanized steel supporting back strap. Neither are good for feeding audio equipment.
Jim