Thanks for the response.
When I overlay the different compressed videos in premiere over top of the original and switch between them, the H.264 seems to be compressing more than the .m2V.
I would be interested in trying the JPEG, but all I can find is the Blackmagic motion JPEG and it comes out as an .avi. What’s the best way to export as a JPEG?
Most likely I will go with the H.264.