my vote is no purge, who knows some day you may be on a trip and not have your mask, you’ll have to rent one and chances are their will be no purge, it’s easy to get used to no having one, why not learn now. I just bought a Sea Elite Frameless Mask Black Silicone
from divers supply 12.99 its low volume comfortable and it came with a free case and neoprene comfort strap, I couldn’t resist they are practically giving it away, for $13 bucks you cant go wrong.