The 15" rMPB is a used a lot for the screen size. I am looking for better battery life and lighter weight. I am using the entry level 2015 rMBP 15". I could not find any review that mentioned the 2016 rMBP 15" iGPU performance Iris 530 vs. the iGPU for the 2015 model. In addition, the display resolution rendering is more on the 2016 vs. 2015 models implying a performance hit. In addition to normal use, I am also wondering about Parallels performance using the iGPU Iris 530 on the 2016 rMBP 15"