With an all-in-one ESC board, I'm curious how long these birds will (hopefully) fly before parts need to be replaced just from wearing out. I've read elsewhere that motors usually last 100-150 hrs or so, however, does anyone have hard data about how much time they've put on their quad so far? This is assuming no crashing / no catastrophic shell failures / batteries falling out / etc. I'm curious for someone who essentially does hours of hovering how long components would last between stress / heat / etc.