Before I get hate for my post about Note 3/Nexus 7, a few days ago I bought an iPad Mini Retina and will be buying the 6+ phone ASAP.
Just from my own experience owning a Note 3 and a Nexus 7 tablet, they both still have huge advantages seperately. The large phone screen is great to have with you at all times for convenience, however the larger tablet screen is great for reading, watching videos, etc. I carry my phone at all times but only really carry my Nexus 7 when I know I'll be somewhere I can read for awhile, use wifi, or play games. Plus when I'm at home if I'm just chilling on the couch I'd rather have the nice large screen to play on.