It is really sad you didn't mention crypto-games.net on your list! How come! We have been around for a very long time and is one of the most successful and trusted casino out there.
Not only cryptogames, he also missed bitsler as one of best gambling site. The interface is very attractive, daily contest, fast response from admin or their mod. Who doesn't want to gamble or try their luck on there?
Stake should be the leading site among them all, I always want to visit again after playing on the site. So many interesting games and I love how payment is made instantly, they always give me an amazing gambling experience and I would always recommend.
Don't forget about Onehash , even though this site didn't get listed on OP, you can betting on sport games which stake don't have.