Silicone Masks –
These sorts of masks are great investments if you care for them and use them properly. Both CFX and SPFX are great companies with great products, I have masks from both and plenty that are custom to NETHERWORLD, I really like them.
The biggest flaw overall is that they are very hot, but the payback in flexibility and durability makes up for it if you can find the right actor to wear them.
Treat them like gold and they will pay you back with impressed guests. You just have to get them out every night and that can be a challenge.
Also you really need to create the total character with teeth, contacts a cool costume and a total performance. Forcing unwilling actors into these with no training will not get you very far.
Thanks and good Luck!