So as a straight male teenager, I'm predominately into lesbian porn. I've watched some straight porn on occasion but the only straight porn that isn't so hardcore that it turns me off (that I've watched) is POV. But generally lesbian porn just turns me on much much more though saying that, there are factors that affect how much it turns me on such as how sloppy the actresses are being (the less the better), the camera angle (I like to see at least waist up as opposed to close-ups of just the faces) and what they're wearing (yoga clothes and for some reason plain brightly coloured clothes seem to work best for me).