I would still prefer to play with those legit casino gambling than those casino gambling that offers bonuses but once you play it you will regret trying it. Better to play with those legit casino gambling without something to offer on you but you will assure yourself that you will receive your prizes or reward once you win the game.
Almost all casinos started with neutral reputation, in this case no one knows whether the site is legit or not. It is also not the main idea of this topic, as it is about what welcome bonus that may attract you as a gambler. Just imagine that all sites are new, no one is considered as legit so what welcome bonus that may make you to join and play?