I am in need of a new laptop for uni work. I'm terrible with organizing paper notes, so i need to take notes on a computer, however most of my notes is mathematical formulas which cannot be typed out. So I'm looking for a laptop that the keyboard can be flipped around and used tablet style with a pen so i can write notes. The closest thing I can find is the new surface book, however it is $3,000 + here in Australia which is ridiculous as it is more than my desktop. Also i7 6th gen preferred, i know gen 7 is out but it is too expensive currently. Any suggestions?