When we started our evaluation, the consensus was that FanDuel and DraftKings have better odds than ESPN Bet. That's not the case, though. A deep analysis showed that ESPN Bet had the same point spreads as DraftKings on NFL games about 40% of the time.
In the remainder of cases (non-NFL), ESPN Bet had better odds than either of its more famous rivals on a 3-to-2 basis. Also, for those who bet the over/under on games, ESPN Bet consistently sets its over/under at a 0.5 point over DraftKings' totals. If you tend to bet the over on totals, it's best to use ESPN Bet.