Fanduel offers probably the easiest site to use. Fanduel also allows combinations of Same Game Parlays..however, Fanduel has the WORST customer service ever. This usually revolves around their promotions. There is no number to find to call with issues. No direct "email". If you have an issue, you can hold 45 minutes, verify your account twice, just to find out why you didn't receive you $10.. so use this site for the bets not the promos or customer service