A picture is worth a thousand words. The Solatube Brand (upper right corner) is the original SOLATUBE and has patents on the best technology (lining of tube and fresnel lens in the dome). This means you get MORE light, a BETTER COLOR of light AND even more HOURS of light. See for yourself. Any other brand is an odd color and less daylight. As a general rule, box stores don't always have the best quality so you want to ask yourself what you want in your roof and home? It's worth the few extra dollars to find your local SOLATUBE dealer. You'll love it! Even on cloudy days! This post was edited by DawnMc on Wed, Dec 31, 14 at 16:25

Update: the electrician (Mister Sparkey) had this light in his van, so I went with it: https://www.amazon.com/Sylvania-73676-Recessed-Surface-Downlight/dp/B00UM9SWTA/ref=pd_sbs_60_1?_encoding=UTF8&psc=1&refRID=G4T35E0AS6YYJ21EP6BP Lights up everything fabulously except one corner of the storage closet. Might put one of those tap lights on the wall in that corner. Paid a lot more than Amazon, oh well! Probably ended up being cheaper than me buying another light and paying them labor to install it (based on the fact that I paid $93 to replace the dining room small chandelier we found at the habitat ReStore). I will probably change out the switch to a dimmer because the light doesn't always need to be so bright :). He also did the two lights over the fireplace and at the front door. those have dimmers (the old kind), and so far they are working. Need to research to see if they need to be changed to LED-type dimmers or not. I plan on buying more to put in all the can lights in the LR and kitchen (8 lights). All you do is connect a grounding wire to a crew inside the can light and then screw in the end just like a light bulb.

We first installed a solatub in the late 1980s in a bathroom in my previous home. In the 15 years that we lived with it we never had to do any maintainance to the solatube in side or out on the roof. It never leaked. We loved how much it lit up the room. We didn't need to turn on lights in the bathroom during the day like we did before installing it. When my daughter bought her house 8 years ago, we had a solatube installed in their windowless hall bathroom as a house warming gift. They love it. It even lets some light into their hallway. Their solatube has not leaked or required any maintainance at all. Last year the added a large solatube in their dark family room and also put one in another bathroom that lost its window due to an addition on the house. Solatubes are definitely less expensive than a skylight for both the product itself and the install. I know that because we replaced 27 year old skylights in our current home when we reroofed 2 years ago. They never leaked but we replaced them just due to their age. The skylights were way more expensive than the solatubes my daughter just installed. I suggest you go with the Solatube brand or the Velux brand rather than some lesser brand.

Thanks everyone for your feedback. I think the 10" is a better scale for the room. Since this is not new construction, I may be limited in locations where it can go, so 10" would likely be easier to work with than 14". BTW, Velux offers a "neural light diffuser." Has anyone used them? Seems like a good idea. Brief descriptions of the various diffusers: https://www.veluxusa.com/media/press-kits/2018-ibs/releases/sun-tunnel-diffuser "Neutral Light converts daylight to appear more like a traditional household light bulb with a warm yellow bias." If you scroll on the following page, you can see a picture http://www.veluxusa.com/products/sun-tunnels/rigid Thanks for your help!