i think we should try it ourself and then finalize which is the best bcoz there r many driver present 4 w810i,k750i,and w810i and all these r specialized in some features like sarmad is good 4 night shots,kriomag is good 4 color,and many other which r modified to get the more sharp picture ,some r modified to get quick shot,so its upto u ..what features u like..