1. There are more ROM options for Jellybean
2. I ran the official OTA NC2 rooted with a ton of stuff frozen/removed for a few days and battery life was nowhere near as good as stock rooted MJ5/NB4 with the same amount of stuff frozen/removed
3. The Jellybean version of Safestrap supports ROM slots and seems more stable in general than the KitKat version
4. With Jellybean you have the option of jumping back and forth between Jellybean and KitKat
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