As long as the microphone, play/pause, previous/next works 750i seems definitely better than 750 for just about 10$. If its just the volume buttons that don't work properly I wouldn't bother much. Can somebody validate if these work. warrenpchi, validated the microphone, play/pause. I would like to know about previous/next functionality. If this too works I'm going in for the 'i' version. Not that I will absolutely need the microphone and others, but they would be handy when necessary. Any reason why I should go for the normal 750 version over the 750i (assuming i use a android phone) ?