I have one plus one 64 gb inbuilt memory wth 3gb ram. This phone is flawless its screen touch like I phone. Its battery back up is also good I am using this phone from one year in this period I didnt get any problem regarding hang like other android phones.
You can play games without any interruption. It is very slim. Overall this phone is awesome. My suggestion is before you think about new android phone you think about it.