Tried both - Resolve is slower and, most importantly, TONS less intuitive than FCPX (even than Motion 5).
Also, last I checked, the free version of Resolve is non-commercial
MSI PS42 8RC - https://www.msi.com/Content-creation/PS42-8RX/Specification
A powerful 14': the variant with 1050 for some reason is priced same as the one with MX250 (an MX150 with a different name). Only 8 gigs of RAM but you can upgrade.
The price is really great, it's very lightweight and has a good battery life.
Also: good matte display.
A weird alternative could be GPD Pocket/Pocket 2?
I'd definitely avoid XPS though, afair they've installed MX150 '1D12' gpus which are about 25% slower.