Grate phone. I have used note 3 for about a year now and have not faced a single issue. the phone still does not lags. yes the bettery performance has been degraded after the lollipop update but still it is way better that other android devices and ofcos iphone. in about a year the phone has only hangged twice and that is when I had many apps oppened.
the memory usage has been very high and stays at a higher livel all the time after the lallipop update and the phone gets heated up really quick but it does not affect the performance or battery.