Ridge vent vs 2 off ridge vents

[Sam Zawatsky]

Hello, I am having roofers replace the roof on my townhouse (due to insurance cancellations because of the roof age and condition) and the roofers gave me an option of having a ridge vent, as opposed to having 2 smaller off ridge vents. All of the townhouses I see in the area seem to use the off ridge vents. Could there be a downside to upgrading to the ridge vent?