I have both phones. for the camera, K750 still better than K550/W610. The colour is so natural, and the night mode is better than K550 (this is personal opinion). K550 is faster than K750 for processing, image viewing, and it support many things that K750 doesn't (A2DP,RSS, flash menu and so on ) and you can flash it to W610 to get Megabass.





