The opening phase for these new books will be fun but only because of the signup bonuses. I don't really think they will be better than Pinny or coolbet or bodog as payouts from these three books are quite fast, same day at worst and usually within mins or a couple hours for interac etransfers to Canadian bank accounts.
The book I'm interested in the most will be Caesars just because of the fact I can bet in person and cash a ticket on the spot for US or Canadian dollars right at the casino here in Windsor.