Hello, A few years back I had a Macbook Pro mid 2009. While working with this, I noticed I got small irritations from the material when resting my hands on the Macbook. It felt like licking a 9V battery, but on my palms. I noticed I felt this when slightly touching the corners of the body. This made it very hard to work with it unfortunately. Ever since, I have used an iMac (never had any problems with the material of the wireless keyboard). But for college and work I need a proper laptop, and I am most likely buying a Macbook Pro Retina 13" 2015 model very soon. But I remembered the irritations I got from my last Macbook Pro. In store I had some time to check out the new model, and it felt a bit smoother but I am just not sure. Now my question is, has the material of the body of the Macbook changed from the mid 2009 model to early 2015? Have there been any other signals from people having the same problems as I did? I tried looking up the material of the MBP, but couldn't find anything so I hope anyone here can answer. Thank you!