I've had a Samsung Note 2 and Note 3 since they came out and cant imagine ever having a phone with a screen smaller..
I have been giving the iPhone Plus a few thoughts only because im sick of samsung loading the phone with a ton of garbage and being forced to use a new launcher to get rid of their terrible touch wiz interface but the longer it takes to get one ( no apple store or any store has a 6 plus ) and the more i keep seeing how crappy the build quality is, it may be best to just get the Samsung Note 4. The Note 3 has a bigger screen and the actual phone is smaller.