With the exception of a few books, WotC has lost most of my interest. I still highly check up on them and find a good deal of their products useful (Sanstorm, Frostburn, etc.), but unfortunately the rift began to form with D&D 3.5. I am cheap; I don't like buying a set of three books twice. As previously mentioned, 3.5 felt too early at the time, so I was put off from buying them. And since they update the SRD, I have never bothered buying them either.
And it just so happened that at the same time WotC was developing 3.5 with the standard and stale elves, dwarves, and orcs with their warriors, priests, mages, and thieves, Malhavoc Press was developing Arcana Unearthed. Needless to say, I found AU to be far more refreshing than what WotC was offering. Good riddance to Vancian magic. Hello racial levels, ceremonies & rituals, and flavor that permeated through it all. But it was not just Malhavoc. No, no, no. Because you see, Green Ronin had caught my eye earlier with the great masterpiece book called "The Book of the Righteous," which got rid of killable gods and racial pantheons and provided a marvelous example as to how to set up a pantheon.
Then you have the Grim Tales from Bad Axe Games, Midnight from Fantasy Flight, Dragonmech from Goodman Games, and much more that is far more inspiring and original.