I've read in other threads that the SP3's heat and battery life has raised issues with a few people. However, I wanted to ask three questions of those who already own as I am still deciding. Is the heat that noticeable when using Metro apps or standard desktop programs (aka Office) or does the heat only kick in when using processor-intesive programs. Same line of questioning from No. 1 — Does the battery life vary when using Metro vs. Desktop? Will the i3 improve either No. 1 or No. 2 since it's a slower processor with less throttling? Thank you kindly.