If the HTC One is just too small for your needs, how about the HTC T6, a 5.9-inch HTC device code-named the T6 is purportedly in development.
It's rumored that HTC is planning to launch a 5.9 inch Full HD Android device, currently codenamed T6. According to EVleaks, the HTC T6 will come with a quad-core 2.3GHz Qualcomm Snapdragon 800 processor, Boom Sound speakers, an Ultrapixel rear camera, 2.1MP front-facing camera, 2GB of RAM, 16GB of expandable internal memory, and a 3300 mAh battery. It's said that the T6 will run the unreleased Android Key Lime Pie.
The HTC One already encroached on Samsung's Android dominance with the Galaxy S4, but based on newly leaked specs, HTC is thinking bigger.
While the phablet game has largely been Samsung's to lose at this point, the supposed specs for the T6 might finally give the Note series a run for its money.