I have some concerns about Stake.
For quite some time I found Stake to be by far the best site for sports bet (good promotions, great rewards, good odds etc ...), but recently I found out that I was really limited in my bet amounts. Even on big events just like premier league games, my stakes was rejected (always too high) even under 0.5 mBtc ...
The support told me that the odd's provider set the limits for each event and each user and my situtation will be reviewed maybe later but I doubt it.
It was the same for Sportsbet.io, but even worse, my odds was lowered, and I was banned from any promotion.
To compare, for me the same thing never happened on Cloudbet.