Agree that Nitrogen is #1 and Betcoin #2. I'm not a big fan of 1xbit or Cloudbet but as you pointed out, all ratings guides will be somewhat different.
Me only agree to the top 1 and 2 but about 1xbit I read someone complaining that sites because he can't withdraw his winninh funds.
Almost all sportsbooks have any drawbacks, so it is difficult to find the perfect betting site. Our main task is to provide players with a choice and the minimum necessary information about sportsbooks for comparison. The final choice, in any case, remains with the players.