3457 vs 3157 bulbs: Which is better for Mustang?

[v8ismyheart]

Hey guys, I’m trying to figure out the difference between the 3457 and 3157 bulbs for my Mustang. I need to replace a brake light and both of these seem to fit, but which one is actually better? Does anyone know if there’s a difference in brightness or lifespan? I’ve heard mixed things, so I thought I’d ask the experts here before I just grab whichever one is cheaper!