I live just across the border in Blaine, WA, cross frequently for business and pleasure. NEXUS is MORE than worth getting. A special lane is dedicated to card holders, often you drive right up and through. Passport holders can be backed up as long as 2-4 hours!!! And, new construction on the US side is beginning this week, will reduce entry gates to TWO for 2 years!
Sumas is a better crossing if you don't have NEXUS, especially on the weekends.