Hmmm it seems like what I've been seeing about sportsbet.io is true since you didn't mention them on your list. I have been seeing some people that complained that sportsbet.io never paid them their huge winnings, instead they will block (I only saw a few people that said this). But a lot of review sites I see when I research on Google always mention Sportsbet as one of the best betting sites. Most of them even put them as the number one, while CloudBet is then placed at number two position.
Even I have seen many negative reviews about the Sportsbet, the above mentioned are actively paying to their customers after their winning through these websites. We should be very careful with the new website there is a huge chance to cheat the gambling people easily, so it is good to stick with potential websites with the active feedback.
Always have peruse every site we have penetrating, there is a lot of sites that are recommendable to perform that give profits in return. Also, I agree sportsbet that has been resemble by many people and also preferably has a good feedback that give accurate closure.