Re: In Apple-specific terms, still a huge win
I moved up from the 2018 i5 1.6Ghz to the M1 Air and the difference is night and day. Battery life, performance, noise (lack of), heat, and general doing what a computer should without noticing it.
I hated that u1060 iteration. The only thing that made me move to it was the 8GB of ram limit on the previous, non-retina air. It probably wasnt worth it. There was negligible performance increase because of how crap the CPU was.
One thing about the m1 - do not believe the people who say 'you only need 8GB of ram because of how the SSD is tightly integrated to the SOC'. I hit the 16GB limit on mine sometimes and it's very noticeable. Maybe not as bad as my Windows PC, but its definitely there.