Samsung Galaxy Note 2
Like the Galaxy S3, the Galaxy Note 2 was once a shining star in the smartphone world. It was (and is) a huge upgrade over the orignal Galaxy Note but for reasons similar to the Galaxy S3, it's declined to the point that we can no longer recommend the device to friends, family or readers.
The Samsung Galaxy Note 2 is cheap but so is the Samsung Galaxy Note 3 and the Galaxy Note 3 is better in every single possible way. It's worth noting that the Galaxy Note 3 is only a year in which means that it will get Android 5.0 Lollipop and could get another update from Google, depending on timing.
Samsung's Galaxy Note 4 is expensive but the Galaxy Note 3 is not and we highly recommend it over the Samsung Galaxy Note 2, a device that'll probably get stuck on Android 4.4 and isn't worth the investment going forward.