Warriors in 6 (although you should add more options for number of games in the poll).
The Cavs cruised to the finals with no real comp in the East, but the Warriors are legit and on fire. AI and Green can take care of Lebron, and Bogut is not going to put up with the bullying that the Cavs big men got away with in the east. Nevermind the combo of Curry, Thompson, and Barnes on the offensive end, and the fact that Kyrie is not healthy.
If the Cavs had a healthy Love and Kyrie, it would be closer, but they are going to have a hard time with this GS team.