I think any american rental phone company is a complete waste of money! They will charge you a fortune and give you little minute and are not very flexible in many ways. I think you are better off getting an Israeli plan. They are much cheaper and are not looking to rip money off people as much. I have heard of this 99 shekel plan a number of times and hear its great! If you don’t need so many minutes out of israel, there are tunz of cheaper plans with tuns of minutes!
Good Luck!!!