Both are great books - the differences depend on what you are interested in as a player.
The Greek has higher limits, posts lines earlier, more props, team totals, wider variety of action. Bet Jamaica has more bonuses going, more eye-catching graphics, dime lines on baseball, etc - just as solid as The Greek, but basically more recreational. Both have fast payouts and very quick responses with their service. The lines tend to be around the same at each, but there's always some games that differ enough to make it worth betting a play at one or the other.
It makes sense to have an account at both if you can. And you can also easily transfer funds between your accounts at each book - as long as it's for over $500.
The Greek has higher limits, posts lines earlier, more props, team totals, wider variety of action. Bet Jamaica has more bonuses going, more eye-catching graphics, dime lines on baseball, etc - just as solid as The Greek, but basically more recreational. Both have fast payouts and very quick responses with their service. The lines tend to be around the same at each, but there's always some games that differ enough to make it worth betting a play at one or the other.
It makes sense to have an account at both if you can. And you can also easily transfer funds between your accounts at each book - as long as it's for over $500.