SCUBA here. Go to a reputable dive shop and try several on. There is no other way. They have to fit your face and create an air/water tight seal. Everyone's face is different. A smooth shave is necessary if you want a really good seal. The people at the shop will show you have to test if it fits. You'll spend about $100+ for a good mask and cheap snorkel.
Especially this - snorkel is just a straw. A hollow tube. Don't spend big money there.
