Samsung has a device to suite just about every need and the Samsung Galaxy Note 3 aims to please users who want the largest screen sizes on their smartphones. While the HTC One M8 is not meant to suite the same niche, its premium design will make any smartphone use stop and take notice.
Even though the Galaxy Note 3 is around six months older than the One M8, the latter is still the more affordable of the two. The Galaxy Note 3 is priced at $300 on-contract, and $725 contract free, while the premium built One M8 is priced at $200 on contract and $650 off-contract. While Samsung and HTC fans can argue over which is the better of the two devices, new users should try and understand their requirement with their smartphones.
The Galaxy Note 3 is meant for productivity with its larger screen, S Pen style and specialized software, while the HTC One M8 is better suites for the regular user, who wants a classy looking device with a capable camera
source - PhoneArena