Hamas and Isis- Who is worse?

A bizarre situation has developed in the Gaza strip as the Hamas is being threatened by an even crazier and fanatical group.
The Islamic Republic or Isis as it being called is trying to overthrow the Hamas in the strip.
The presents some intriguing possibilities for Israel.
Some things to consider.
Both the Hamas and Isis are sworn enemies of the Jewish state. Israel benefits from the mutual destruction of both the Hamas and Isis from each other.
Israel will need to control the strip at some point to bring lasting quiet to southern Israel.
Some have said that Israel should strengthen the Hamas somehow as Isis is the greater long term enemy.
This is impractical and wrong for a number of reasons.
Egypt will never agree to any overtures to the Hamas/ Moslem Brotherhood.
This cannot work and will not work.
In the short term the war between Isis and Hamas is in Israels best interest.
The weakening of Hamas is in Israels best interest in the short term.
The obliteration of the Hamas while Isis suffers great losses is ideal.
Complete chaos may bring missiles on Israel but this civil war in Gaza may save many Israeli soldiers lives in next war that will not happen.
The way needs to be found to supply Isis with small weapons that will be used against Hamas.
When Hamas collapses or is near collapse Egypt should come to the rescue of Gaza and kill all Isis supporters.
There may be some residents of the strip that are tired of both Isis and Hamas that should be sought and helped.
This is the opportunity to take back the strip after most combatants are dead and bring in a international body to govern the strip.
Should be interesting.