We look at how deep markets are, what types of parlays are available (single game or multi), and if there are unique features to help the site stand apart. Betting Variety - With so much competition out there, it is important for betting sites to provide a good variety of sports, as well as betting features.Plus we look into existing customer bonuses to make sure you get ongoing value. The value, requirements, and turnover amount are all considered. Bonus Offers - We like to start by looking at the value of the welcome offer, as it is the best way to get someone in the door.There a number of factors that go into what makes a betting site good, but generally we break it down into the following categories to give as objective a view as possible.