You know that you just started one of these "never ending stories" (pointless discussions in my view as you shoudl try and find your preferred IDE ) what is best?
It is like who has best best national football team? Who is best in cricket?

I have to admit that I liked JCreator while I was studying as it forced me to look in numerous errors that other advanced IDEs would warned me in advanced and let me seek solution to them. So whenever beginner will ask what to use I strongly encourage to either use command line or JCreator.
Unfortunately JCreator is not suitable for professional development. It doesn't stand chance against tools like IntelliJ IDEA (my choice), Eclipse or NetBeans. So there you go...