Should I trade my iPhone 5 for the Galaxy Note 2, or wait for this?

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http://forums.androidcentral.com – So to keep things short, my sister said I could use her upgrade to get the Note 2 if I give her my iPhone. I am not sure if I will like Android and may miss iMessaging and iTuens and stuff but I am willing to make the change. The question is, should I wait for the S4 or go ahead and get the Note 2? (HowTos)