Why Use a Reflector Trim?
If you are trying to decide between a reflector trim and a baffle trim, there are some important things for you to consider. Though structurally interchangeable in most cases, reflectors and baffles are functionally opposites. Reflector trims amplify and intensify light, while baffle trims subdue and soften it.
It's a lot like the differences between settings on a water hose nozzle - the "mist" and "jet" settings both release water, but they affect the water in very different ways (namely, one refreshes you on a hot day and the other is good at knocking over pails you are trying to fill). The shape of the nozzle settings makes all the difference, and the same is true for reflector and baffle trims.
If you want a lot of bright, intense light, the smooth, shiny inner cone of a reflector trim will do the trick. But if you want gentler light, more suitable for residential lighting, the concentric circles that line the inner cone of a baffle trim will work to your advantage.