Anyone claims sites aren't fair after they lose, the one that I feel is least likely to scam or be faking bets on purpose is Just-dice since it's operated by a known old and already having tons of BTC forum member, You need to pick the right site for yourself on your own though IMO.
Yes Just dice is a site owned by Dooglus here who was the first gambling sites owner here. I always feel safe while playing on his site but for some reason he is now given red trust by some good members. Though you can freely play at justdice, site isn't affected by such things.