Which site has the biggest faucet rewards for dice?
depends on levels with primedice you can get also good amount like 5k satoshi each claim.
I think it's really hard cashout money just from the faucet...
You can check in play amo faucet page. It would provide the max of 40 spins in the faucet. Which would cost around 50EUR value if you buy it, but I am not aware of primedice.
As said, faucet would not give big amount to play continuesly or decent income. Simply waste of time.