Goodkind is one of the few modern fantasy writers I've actually read... all 11 books.
The first and second books are the best IMO. The series sags in the middle, hits an all time low in "The Pillars of the Earth" (you don't even see Richard for like 99% of it) and "Naked Empire" (this is like a total "bonus level" book). Then it gets OKAY again in the last 3 books... but each book has at least some awesomeness in it to keep you wanting more.
I am a loyal Goodkind fan, and I'm sure I'll end up reading everything he writes in the future, but I think for whatever reason, the Sword of Truth series went on longer than necessary (though I admit I was in mourning when I finished it forever). All the best and most creative ideas happen in those first 2 books... the seeker/sword, the boundaries, confessors, mord'sith, shota, additive vs subtractive magic, the sisters of the light/dark and the prophet nathan. Whatever new magical stuff happens after those 2 books is basically just a rehashing or reappraisal of the same stuff...though the whole imperial order thing is pretty badass, as is nicci later on.
Also, he gets pretty preachy as the series progresses (hint: Goodkind's a big fan of Ayn Rand
), so unless you agree with him philosophically, there's a chance of his tirades becoming annoying haha.
My advice: if you like the first one, read the second one....if you're in love, keep on going. Richard and Kahlan are fantastic characters--each of them is superhumanly special and powerful and wise and smart--yet they still seem like regular people. They will buoy you through the lame bits