With transfers more common under the new bus network, buying
a Day Pass is your best option. A Single Ride Local pass costs you $1.25 and will take you where you want to go. If you want to get back, it'll cost another $1.25 for the Single Ride pass back home.
That same $2.50 buys you a Local Day pass and gives you an unlimited number of rides for the next 24 hours.
So, long story short, buying a Day Pass (or 7-Day Pass or 31-Day Pass) is a smart decision.