I spend a Galaxy S3 to Xperia Z2 (double performance), and the difference is striking.
This mobile phone is just perfect. It is a high-end, it is cheap, available quickly and Lollipop design is gorgeous and performance.
I quit Samsung to stop its support on the unexplained galaxy s3, I come to Sony with quality, continuity of support and satisfaction.
More hesitation, I found my brand smartphone!