guys is S1 easier or M1
I did both this year!
M1 is good when you understand the concept and practice as much as possible, it's just the calculation part of Physics, so if you take Physics, even with just IGCSE knowledge, that would be fine for you.
S1 is easy to gain marks, and much easier to lose marks due to veryyyy silly mistakes that you may overlook when reading the question, noting down numbers and rounding them off to the correct number of significant figures, yet it's comparatively easier than M1, most of the formulas that you'll use are in the formula booklet and there isn't much of thinking that you'd need to do compared to M1, where you need common sense!