The "O" had the best price out there by far. *** was 100 more. This is not for homeowners to install. This thing is an octopus. Heavy and it goes every which way while installing. I am a pro contractor and it took me 2 hours to install. If you buy and install it must be reinforced. The screws that hold it up are way to week. you have to use long screws on the outside of the cover so they will be exposed. Just paint them to match. I used 3 inch ones. Lights are great but bulbs expensive and get really hot. We use LEDS but they hang lower than the shades. Over all I would buy this again.