I picked up a larger macbook pro last year. One thing I find myself doing often is loading images from a sd card from my digital dslr camera. The usb type c is still not my cup of tea.
I honestly haven't tried working with large image files as I don't normally do that so I don't know how the processor would handle this. The problem I had with the rMBP... ...is that I was not taking it often with me.