Why need to have preferred when playing ? when the best interest of gamblers is to find a legit and trustworthy gambling site that will provide safe playing , depositing and withdrawal ?
I know what you are trying to impose here , but of course this is gambling section in which we are tend to Lose most of the time .
but enjoyment of course must be there for us to find what gambling is all about .
It's a bit confusing when I understand the OP's question, but maybe he meant a casino that offers a lot of provably fair games as he mentioned 2 casino sites in his thread.
If this is the case then I don't think gamblers should always rely on a proven fair slogan on a particular site to bet because what is expected is a provably fair game and a good site reputation. There are many sites that offer provably fair games, we could try them but of course it really depends on the gambler's interest. Now I prefer sports betting over dice, crash or slots.