I recently bought a samsung galaxy s6, it has got all the essentials which a mobilephone should have.following are the specifications of galaxy s6
screen: - It has 5.1inch super amoled quad hd display with resolution of 2560* 1440p with pixel density above 500
perfomance: - perfomance of s6 is superb the transsion, animations are fluid and there is rarely a frame drop . The new touch wiz is quite fast and fluid . overall perfomance is top notch
camera: - It has 16mp camera with f stop 1.9 . It takes great low light picture but camera is biased in increasing the exposure which makes pocture lool artifical
build quality: - s6 is a well build phone . It has metal railling and front and back has corning gorrila glass 4 . phone is quite slippery though
battery: - The battery of s6 is quite good but not exellent .it charges quite fast with upto 50% in 35-38 mins
samsung has been the leading mobile company from decade and I shuold say s6 is the best mobile made till now if we talk about android.so, go for it.