Sig all the way, better trigger, more accurate, better resale, etc etc. I've owned striker fired pistols and hammer fired, I doubt I will ever own another striker fired pistol. I have yet to handle a new striker fired handgun that didn't need a trigger job out of the box but if you or your friend doesn't mind a loooong creepy trigger pull the striker fired guns are tough and extremely dependable. Sig is deserving of it's "to hell and back" reputation as well. Have him rent and shoot both, that will probably make the decision pretty easy.