Since when is freebitco a casino site, it's a faucet site and it just has gambling features but not the one of casino.
Freebitcoin is a casino already since they have gambling games (hi-lo and lottery) so it is not just a faucet like it was.
Primedice is one of the most reputed casino out here you can play without fear you'll love it.
I cant say Primedice as a casino because there is only one game, it is just a dice site instead of casino imho.
It's strange you did not mention bitdice it's one of the best casino new games, designs treasure chest you'll love it. Click on my banner and make some extra cash.
Nothing strange here, people has their own opinion on which casinos are the best for them.