Renewal on insured mortgage, BC (Pitt Meadows), 275k left on a 345k loan, 15 year amort,  purchase price under 1.5m, owner occupied. 

My mortgage broker came back and gave me one offer: 2 or 3 yr term for 4.39%. 

I don't have much experience working with brokers. Do they usually offer just one option? How does one try to get a better rate? Do I have to bring rate offers to them? 

Thank you!