No particular order on those 3. One might be better for VIP players, one might be better for small/medium players. One might have a better Promotion, but if you wait 30 days, maybe another has the better Promotion.

One might offer lots of tennis matches, and the other might offer lots of Euro basketball.

Then the look/feel of the App is all personal preference. I like the DK look/feel, but I know many people prefer FanDuel.

#4, I'd go with MGM. But the big catch on MGM --- if they decide you're a smart/good/sharp player, they won't hesitate to uber-limit you. I'm talking like $5 maximum bets. At some point, almost every Book will limit the good/sharp players --- but MGM is waaaaaaaaaaay quick on the trigger.

#5, Barstool. Only because I think they're still doing the $1k sign-up offer.

#6, BetRivers.

#7, all the others. Use them for the sign-up offers, and then ditch them.