How much you earn for Stack your STX

How much you can earn for example Stacking 100 STX .
In STX or in BTC
I know are different comission or types of stacking but a approximate number.

And if anyone know in your think what its better the reward in BTC or in STX?

You can see historic payouts from Friedger Pool in STX at https://pool.friedger.de/payouts/