Most reliable Corsa F (2019 - Present) Engine and which engines are chain driven?

Currently I have a ‘65 plate Corsa E and at some point I’m considering getting the Corsa F (MK5) series. What’s the most reliable engine out of them and are there any with chains cos I’ve seen some use belts. As a fallback option, I’m also considering getting an Astra K (preferably one with the GM engines)