In those 3 choices i prefer primedice is the best among the three. They are up and running since 2013, without any accusation until now. Upgraded and improving more from time to time.
I also heard a little about him, but I do not understand why he is so remarkable?
Or is the fact that he has existed for more than five years and for all time he has developed a good reputation?
I think its because primedice is more popular although i also heard betking before but i dont heard anything from 999dice . primedice is popular and remarkable because it do have a sig campaign on this forum and their campaign runs for a long time . while betking only have a small giveaway back on the year 2017 if im not mistaken . but most importantly the sites service do still matter the most . thats what makes them the best .