After bench racing for some time, I came across this company on line. Having already installed 5 solar tube lights , I needed one for a flat roof and the previous company I had purchased from did not have one so I decided to give Infinigi a try and I sure am glad I did! The customer service was great and the quality of the solar tube was commercial grade for residential use. I strongly suggest the dome diffuser, it puts out a wider amount of light. If and when I am going to do another install of a solar tube light, I will purchase from only Infinigi. Also, I found the price to be very reasonable.