Hello I have a 2017 13 MacBook pro tb. I'm very intrigued at the idea of upgrading to the 2018 13 mpb. I was wondering if it is worth even upgrading at all and wait till 2019? I want a quad core to better "future proof". Is the 2.7ghz i7 quad core worth the extra 300 over the 2.3ghz? Or should I spend that money on 16gb ram. I would have this computer for 5+ years hopefully.