Hello. Ive been dealin with aluminium macbooks for 5 years now and I never had any issues with stained aluminium where the palm touches. However, now the macbook pro is gonna be the main machine and im worried that something ugly might happen. I dont know if the issues only happened with older versions. Also, apple said you should use palmrests, but only regarding macbook airs.. So what do you think? Should I get one before it's too late? Or is it gonna harm more than help?