Changing cassettes and/or crank gears.
I have a Cannodale 2010 Cadd 8
I would like to upgrade my cassette or crank gears to allow me to have another option for steep hills. At the moment I have a dual sprocket crank set and 8 gear cassette.
What would I have to replace to achieve the results I want? What makes are compatible with my bike and preferably the least costly.