Course 1 vs Level 1 - which? Why? When? What?!

Hello! I’m on lesson 10 of Course 1 and am really enjoying it, doing 1 or 2 lessons a week.

However, I’ve only just seen that people seem to recommend doing Level 1 rather than Course 1.

Should I stop and start doing Level 1 or carry on with Course 1? What do you think?