Thanks. It's 500 samples, rendered for about a minute on the GPU. It could have probably been 300 with no ill effect but it never hurts to go a bit over.
The lighting is just a half circle extruded with a subsurface to smooth out the edges. It's not usually good to get a ton of polygons on an emitter but for a 1 minute render it didn't matter. It also over exposes the image and doesn't leave a lot of shadow, which is what I wanted for this test. You only really see noise in the shadows so eliminating them can help get a smoother image.
Thank you! I do have another question if it's not a problem. It looks like all the materials are exactly the same except for color changes. Would you be able to share your material settings, or node setup if it's more elaborate? I'm testing indoor lighting in my own renders right now and it would be nice to see how your material settings work with my test scene.