When it comes to 3e products, the thing I value closest to my PHB is my KoK DM Shield. The thing is so comprehensive. It has every chart and table I could ever want all right there without the pages and pages of text and pictures in between. It's also color coded so if you're looking for something that is a weapon or Kalamar specific or whatever, you can look for a color first so you don't have to spend time looking through the wealth of information there.
It can be overwhelmnig at first, but once you get used to it, it's a lifesaver!
It can be overwhelmnig at first, but once you get used to it, it's a lifesaver!