We see that "illusive" light loss and failing cheap imported chinese drivers here in Texas also. I've seen 30%-40% failure in 1-2 years with LSI and Beta/Ruud. No BS! The light output is really bright at installation, but light shrinks in the 24-30 month range..for some reason. These type high lumen output fixtures range from $350-$1500 depending on manufacture. We never guess with LED we get L90 w/ 10 year light loss guarantee and 5 year warranty. email questions to tsieli@yahoo.com