Tl;DW: If you can, use the Common Data Service connector for PowerApps when you interact with Dynamics 365 CE data. It’s faster and a heap more efficient. You can read more about the CDS here
My video doesn’t really deliver a knock out punch, but I can assure you even the experience of building the apps in the video, trawling through PowerApps ‘friendly’ menus looking for fields etc. was quicker using the CDS connector.
As always let me know what you think!