I'm still with my Note 3. At the time I was seriously considering the LG G3, but couldn't find one available unlocked anywhere, at any price. Conversely, Best Buy had the Note 3 I am using in stock, unlocked, and were able to price match to allow me to get it very reasonably.
Even on just HSPA+, I still managed to pull about 80gigs of mobile data (thank you, T-mobile) for watching SGDQ 2015 live. And being able to use the SD also helped in being able to keep an off-phone NAND backup in case anything screwed up with it.
So the fact that Samsung wants to take away SD and removable batteries concerns me.
So with that in mind, if I were in the market... naturally I would need a phone with SD slot, removable battery (with an extended replacement battery available), and a good blend of high res display with a solid radio/antenna to take advantage of the speeds; also, easy to root, and will actually work with Xposed Framework. But since I hadn't had to look since getting the Note3, I'm not sure I know where to begin.