probably S6 edge, there are a few things that i don't like about iPhones.
I'm a user of Note 4 awaiting for the Note 6 this year upon renewal of my contract. Note 4 allows you to sign documents on the go using your stylus. While the android ecosystem itself allows you to download youtube videos hassle free without any conversion in format or transferring from a computer. Same as transferring any movies and even include subtitles the same way as you do it in Window. Transferring via bluetooth to any bluetooth enabled device is also not a concern not to mention transferring movies via wifi will only take you around 5 minutes which is quite an old technology already in android ecosystem. iPhones represent class but I prefer features over class, or it's just me.