I am considering getting a MBA when the next generation comes out as a replacement for my 2012 R-MBP. I love my retina MBP, everything about it is great -- except it becomes a branding iron (read: unbearably hot) when using it on my lap. Do any of you have experience using both (particularly under load, such as playing games or other CPU/GPU intensive applications)? Would you say that the MBA gets significantly less hot -- or is it pretty much the same story with both? I understand *why* it gets hot, I just want to know if the MBA gets as unbearably hot as the R-MBP. Thanks!