I have tried or even seen a humidity sensor so I'm a bit in the dark here
I suppose there is missing a "never"
But dont worry, its pretty straight forward
One of them does temperature too but that is not really required although I could use that instead of NTC's
Temperature is never a bad thing to measure, and it aint much more pricy, so ill go for the combined sensor..
Are there any better options?
Well, that depends on what you are planning to do with it? I have used those sensors before, and they have worked like a charm