I have had my 10th gen i7/16/512 since Friday (5/22) and am really enjoying it. This is a replacement for my personal mid-2013 MacBook Air 11.6", which I still really love (especially the form factor) but that laptop is showing its age.
My primary work laptop is an early 2015 MacBook Pro 13" i7/16/512 and the there is a substantial difference between this 2020 MBP and it as well. I've been using the 2020 for work this week and it's so much smoother. My typical daily workload induces lag in the 2015 MBP fairly frequently, but the new laptop has none of that. I believe that jump from a dual core to a quad core is substantial.
The keyboard in the 2020 is great, somehow feels better than the ones in those other two laptops, perhaps more clicky/tactile/stable, but maybe that's just because it's new. And it's definitely miles better than the butterfly keyboard in my other work laptop (2017 MBP 15"). I always hated the way that keyboard feels, even if you could get past the reliability issues it has.
My only complaint with this is, of course, the camera. It's just bad for such an expensive laptop. I read about people saying the camera is worse than on older laptops and I thought they must be exaggerating, but, they might be right. I think the camera on the 2015 MBP looks better than in the 2020. I just don't know why that would be. I'm hoping it's a software issue and not a hardware issue.
Still extremely happy with my purchase. It's fast, it's small, it's quiet, it's light. It's perfect for what I need it.