what's going on guys, just recently, I have been interested in getting the 2015 rMBP. I was wondering if there was anyone that has gone from the 2013+ MBA to the 2015 rMBP, if so, is there a noticeable difference in terms of the battery life between the two? Or does it vary within what kind of stuff I'm going to be doing. The stuff I'd be doing on it is like web browsing, watch videos, listening to music on iTunes, coding (as I'm currently in school for computer science), possibly do some light video gaming. The macbook will be mainly used for school. Any feedback will be greatly appreciated, thanks.