I want the latest MBP, the 2018 model, however I am wary of the OLED Touch Bar. OLED messes with my eyes. So I was thinking of downgrading and getting the 2017 MBP without Touch Bar. But just how big is the difference between the 2018 MBP and the 2017 MBP? Am I going to be missing out a lot by not getting the 2018 MBP?