I was using iPhone and thought of trying something new so I took Z10 as it is cost effective too. Overall I could say it is worth for money. The display clarity and camera clarity appears cool. Initially had difficulties with some common apps like whatspp viber etc after updating the OS it all disappeared.
It is not good to use if you are an app craze but for other aspects it is really good. The battery backup is not in line with iPhone but better than Samsung. If you looking to opt for Z10 better buy from reputed store instead of going online as they sell some minted pieces at discounts.