Since they're licensed and prominently display a seal from state gambling regulators to prove it, BetMGM, Caesars Palace, DraftKings, Golden Nugget and Borgata are among the most trusted online casinos.

FanDuel offers much better odds on sporting events and does so with regularity. DraftKings also has competitive odds, but not to the degree that FanDuel does. FanDuel also has more bet types within each market, but DraftKings excels in every other area mentioned.