I've gone back and forth on this a lot, but I voted for Maccabi Tel Aviv. All 3 teams listed here have the talent and pedigree to win the league, but Maccabi has the best depth and I think that puts them over the top. With all these guys coming up from the youth ranks and playing well, they can rotate their players and keep them fresh, and they can cope well with injuries. Haifa and Hapoel have great players, but we've already seen with Haifa in particular how an injury or suspension can change the way the team performs. Imagine if Hapoel had to go an extended period of time without Damari or Tamuz- who would step up? Lala's an ok bench option, but they aren't deep at striker or most other positions.
The one caveat I'd make is that Haifa could buy reinforcements who change the picture, especially if they make the Champions League. Itzik Cohen is a nice buy at an important time, and Tamir Cohen would be a huge deal. So don't count them or Hapoel out.