Hi all: I am in need of upgrading my ageing MacBook Air but wanted to first check if the 2017 MacBook would feel like an upgrade in terms of speed. How does the i5 2017 compare to the 1.8 GHz Intel Core i5? I mainly use it for photo editing (via Photos) so the improved screen resolution and larger disk space are the main reasons for wanting to upgrade. I am drawn to the portability of the MacBook which is the reason for not considering the Pro. Full specs of Air are below: 1.8 GHz Intel Core i5 8 GB 1600 MHz DDR3 Intel HD Graphics 4000 1536 MB Cheers!