probably still Depeche Mode.
In high school, I was "that girl obsessed with Depeche Mode."
It was hard for me to admit that they overtook Duran Duran as my favorite band.
Now I'm tinkering with replacing them with Counting Crows. They've been my favorite for several years, but they just don't have anywhere near the volume of material. And they're so different that it's hard to compare.
U2 has also been considered, but they've released so much garbage along with the good stuff that I think they're out of the running.