Most of the garage doors we work on in Smyrna went in after 2000 - the area's median build year is 2002, a good decade newer than a lot of what we see closer to Dover. That means you're mostly looking at wider two-car steel sectional doors on standard torsion springs, not the narrow single-panel doors from the 1960s and '70s that still show up elsewhere in the county. The openers are newer too - circuit-board logic units rather than the old mechanical relay boxes, which changes what actually fails.
What breaks on a 20-year-old door is different from what breaks on a 60-year-old one. On these newer doors, the springs are still factory-matched to the door weight, so the common failure is wear, not mismatch - a torsion spring that's done its 10,000-cycle life, a cable starting to fray at the drum, or a bottom bracket that's taken one too many hits from a car bumper. Smyrna sits about 10 miles from our Dover shop, and the builds we see out there track that later construction window closely enough that we stock parts with this generation of door in mind, not the older stuff.
The cold band we're in matters here too - steel contracts in winter, and a spring that's already near the end of its cycle count is more likely to let go on a cold morning than a mild one.