So with Magic Dice they are just taking a little to much off the top. By doing so long term there is no way to win. You can get lucky short term, but over time they will get your money. I like https://kryptogamers.com/?ref=pifc better as their house edge is half of what Magic Dice is. This means if you place bets of 2,000 steem over time you will loose 20 less steem (excluding luck).
The other thing I have noticed is that they have way less devastating runs of bad rolls.
Then add in that they have Blackjack and Video Poker it makes it the best site out there right now.
(BTW, I do not gamble with @pifc account but send all referrals to this community account to help it grow on their referral commissions).

That is from my reply below. Since you mentioned Holdem (my game of choice) I thought I'd point out that Krypto Gamers.