Magfan, i know you're kidding ~! My comment was not directed at you, as either expression works for me too. But the point I was trying to make is that there is a difference between burn-in of electronic components as current passes through them as opposed to break-in with respect to the movement of mechanical devices. My bicycle parts (moving; mechanical) 'break in', they do not 'burn in'. By that logic, it's easy to see that they are distinctly different things.
Condescension should be checked at the door, as should rudeness and sarcasm. That's not what this place is all about,now, is it?