The learning curve is steeper with Play, but you get more integrated power at your beck and call -- just remember that adding EBean was a matter of turning on a plugin. You'll find that other features have similar support, such as Play's security plugin.
Play is a no-brainer if you're a fan of Scala, and it's an overall solid Java framework. You just need to be willing to trade some of your standard Java mindset and tooling for a slightly different programming paradigm.
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