^^ Go with the matte 1520s. The Galaxy Note 3 hardware design looks very tacky IMHO. Especially if you're going to be coming from an iPhone.
I am actually playing with a Note 3 almost daily since I always pass phone stores.
I held the Note 3 just get a glimpse of what a 1520 would feel in my hand.
I actually like the width of the Note3. I like the grip I have over it. I feel it very confident in my hand. And the display is really cool.
It has an anti-glare to it.
And to think that Lumia's is even better I almost dream about it.
Anyway, the Note's build quality is indeed a joke. It feels like a chinese 100$ phone.
But I will put a case on it anyway (if I end up buyin it).
I am a 6'3" guy so I have fairly large hands but boy, that Galaxy Mega 6.3" is really pushing it.
To be honest I STILL consider 1520 in "normal" phone sizes and wouldn't mind using it, but those Galaxy Mega and Sony Ultra Z..
Holy cow ! The Sony is a table in every sense, not a phablet.