All in your list were good dice game and all of them are provably fair it is really up to the gambling site which offer something that would make the players go to their website usually it is because of their tournaments and promotions, all the players knows that these sites were good and the games are good but they will go to the site that offers good promotion so for me the best dice game is where the best promotion are.
How can you say that they are all good? Have you tried playing to all of them? Or you can say that because of the screens that you see in the OP. There is only 5 dice sites shown in the pic and there is one in the poll that is missing. I wonder if what would that be? HHmm. There is a way to tell if the site is provably fair and that is if you see a seed and a verifier.
Tournaments are great only for the big players but as a small player, I can rarely win any prize from them but I might qualify on some promotions so I will also choose a site with a better promotion like you. I don't really mind the design since I am only playing to earn something. I only focus on the numbers shown and not in the background.