i've never done business with either. but from all the feedback i've read about osaka, i wouldnt take something from them if i was just paying shipping. i havent heard much about total-boost but i would buy from them a hell of a lot quicker than i would buy from osaka. personally i would buy from hmotoronline again. i bought a B16 from them and it came from CA to PA in 4 days and it was spotless