Using IDEA, but tried Android Studio and Eclipse as well.
I think IDEA better than AS because AS is based on IDEA - means updates always come first to IDEA.
Eclipse looks huge and slow, but I use it for android native sdk development.
I switched from eclipse to android studio. It's just a more polished dev environment. With eclipse I was constantly dealing with bugs and wasting time fixing them. AS has been so pleasant and easier to use. Love the darkula theme it comes with which makes it easier on the eyes in those long coding sessions.
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