My mountain bike is too difficult to pedal when the going gets steep. I need an easier gear ratio. Am I better off switching the chainring or the cassette?
I currently have:
A 30 tooth FSA chainring. A 28 tooth ring is available that would fit my crankset. See other question.
A Shimano 10 Speed 11-36 Tooth Cassette. I haven't figured out the compatibility yet, but Sunrace makes several 11-42 cassettes. They are around ~$80 (CAD) but may require special derailer hangers.
What would be the effect of choosing either of these options?