I want to draw on PDF, Keynote (if keynote wont work the powerpoint) and a whiteboard. I have a 15" Retina MBP mid 2012, 16 gb ram, with Mavericks and windows 8.1 (using Parallels 9). I was really hoping I could use an Ipad air and accomplish my annotation needs with ipad but it doesn't work well. I even bought the $100 stylus but it's just not detailed or sensitive enough. I really want to keep my MBP and not have to go to the dark side a buy a Lenovo thinpad yoga. Lenovo however offers a side screen the LT1423p I think this will work on the windows side of my machine and not the mac side? If this doesn't work I'm going to have to buy a PC convertible notebook to do my presentations. Any other solutions? as you probably can tell I'm not that tech savvy! Thanks in advance for your help!