There's the difference between when reviewing the games vs. reviewing the casino. The games are fine. The casino, however, has some issues: there have been multiple times when BitStarz has led to large winners having problems with withdrawals (their accounts were seized and blocked).
They "limit" the maximum amount that a player can bet by sneakily putting it in the terms, and only enforcing that when someone beats the bonus and is trying to cash out. Conflicting ToS, to which they only enforce one of them. Very shady.