The first day of the series will start in the next two hours between England and the West Indies. I am completely sure that the West Indies will win this game, and they are very confident about facing England as well because England has just lost the test series of three matches against Pakistan in Pakistan, and that hurt their confidence very badly.
I think West Indies will use spinners in this game. When the Pakistan vs. England matches were going on, Pakistan used spinners instead of their pacers, and this strategy led them to the win. Also, the match will be played in the West Indies (North Sound), so it means that they will have the home advantage too.
Yes, you are right with your point of view but maybe you are forgetting something, recently there was the series between Sri Lanka and West Indies in which West Indies lost the games. If we notice the one-day matches then they have won just one game there which was the last game and same on the T20 series as there they won the just last game and in all the remaining matches they were struggling to make the win for themselves and at the end of that series, they had a very bad result in those series that is why this time, I think England may have a better chance today.
I got 1.75 odds on betting on England, and it is not bad either. With West Indies you may get a little better odds, that is over 2.