I have been using google Nexus for about a 1 year when I got it from US. It has been working good. The camera quality is fantastic. However, I think the phone is slightly complicated while using it. Even if I have to find a contact, then it is a bit of a struggle. I am still getting used to the phone.
It is overall a good camera if someone who is tech savvy is using it but definitely not suitable for older people as they will find it difficult to operate. More over, the screen of the mobile is very fragile. I dropped it once and the screen breaked. I had to get it replaced for Rs 7000 which is too much of money. So, if you are tech savy and planning to buy one then make sure you put a tempered glass on the screen. The back cover will add the safety to the phone.