I would like to switch to a new camera. I’m currently using an old and simple EOS 2000D. I’m a beginner and only want to use the camera as a hobby or when traveling, but I still want to take beautiful photos. Should I stick with APS-C for travel photography and wildlife or switch to full-frame? What really bothers me about the 2000D is the ISO noise from ISO 1600 and the lack of detail in the photos. I’m planning to take photos of the Northern Lights on a trip in the fall. Would you advise me to go for an EOS R8 or an EOS R7? Or would an EOS R10 be enough?
For travel and animals I would absolutely stick with aps-c. They are lighter weight and smaller, so good for travel, and the crop factor makes the zoom lenses 1.6x longer, so also better for wildlife.
I’ve probably owned close to 20 different slr bodies. You’ll be able to take beautiful photos with any modern camera.
I don’t know anything about the specific bodies you listed to make comments about how good their high iso performance is. Compare them at https://www.dxomark.com/camera-sensors and see which one has the best low light performance.