Hi,
I wonder what you recommend in case the number of different values is bigger... Let's say we want to filter on 100 referring domains... Would you recommend to make 100 "OR statements"? It's not possible to do that each time we need it!
I would recommend to use "contains any of" and make a list. The only limitation here is that it's not exact matches, so we may have trouble in case of ids for example (as "123" will match "123" and "1234"), but it could be OK for referring domains.