Between the curved edges and no card slot, I see no need to move away from my N20u. I'd have to pay for the 1tb model to grt close to the storage I use which is a no go. And if you search eBay for Samsung curved edge phones with cracked screens, you will see the vast majority of them have cracks initiated at the curved edges. The screens are more expensive, offer no useful value and only make the phone easier to break.
While I get it was originally done to differentiate themselves from Apple, they have no use in today's phones.