I want to switch to 13" models for portability and price. And it seems like a waste to buy a slower computer 5 years after. 4 Core i7 will be replaced by a 2 Core i5 or i7, even in best case multicore score in Geekbench is 30% slower than mine. Single core performance will be slightly better, faster SSD and slower GPU because no dedicated in 13". The only way to actually upgrade is to keep 15" and pay extra for the touch bar, which I have no use of. Did anyone make a switch from 15" to 13"?