With all the heating and excessive fan noise being reported on the SP4, does it just make sense to go with the m3 model for regular light usage scenarios - web browsing, video streaming and MS office applications? Will the M3 model be able to handle HD Netflix and YouTube streaming without any issues? What about content heavy webpages such as The Verge? Will scrolling be smooth on such heavy duty webpages? In what applications or scenarios will the M3 with 4GB RAM struggle compared to the i5 with 8GB RAM?