as Peeps Place explain in table picture here the bitcoin sportsbooks rank based on user reviews regarding lines, support , legalities etc
first , NitrogenSports
second , Betcoinsports
third , Jetwin
fourth , bitcoinrush
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i would recommend directbet too as they have a perfect service and supportthe only minor from directbet is yeah the very low odds.
All of what you mentioned and to add some.
It's comprehensive and an overall rating.
1. Nitrogen, Betcoinsports and Cloudbet dominate the bitcoin sports betting market world wide. They are the biggest bitcoin sportsbooks with the most clients and seem to be safe. Jetwin has a clean record as does Bitcoinrush. DirectBet has the biggest backing here at bitcointalk.
2. Of the three biggest books, Cloudbet has the most hiccups as far as withdrawal times, customer support and other complaints.
3. In order to have a grading of "A" or "B" deposits and withdrawals must be done within a 15 minute window. Exceptions may be given to books with poker rooms. More fraud occurs in the poker rooms and books may need more time. There are also exceptions for large withdrawals and red flagged accounts.
4. DirectBet confiscated a player's deposit and winnings claiming an attempted hack. DirectBet has been made aware that confiscating a players deposit (bet in DirectBet's case) will prevent them from being a "B-" or above. Books rated "B-" and above are recommended. A book will never be recommended when they confiscate a player's deposits.
5. Email must be responded to within 1 day. The time frames set for deposit/withdrawals and email response were set with the help of feedback in the rating's thread.
6. Offerings and theoretical hold (margins) are included in the ratings.