The bass is very subjective some might find the C5 bass too much some might find it enough. On paper arrow meant to have more bass than C5 on its highest setting to my ears C5 has lot more bass than arrow . On both the bass is very tight and punchy but the bass quantity is more on C5.
I will need to double check the arrow for its power as I never used it on the highest gain setting but based on memory I think C5 and arrow are the same. But arrow wins on battery life on its highest setting.