I upgraded from a top-end 2017 15" to a top-end 2018 15", and even that was very noticeable. I was quite surprised at how much better the 2018 was. I really li

I upgraded from a top-end 2017 15" to a top-end 2018 15", and even that was very noticeable. I was quite surprised at how much better the 2018 was. I really liked the 2017 to begin with.