It's rather Eddings who writes the same story over and over again, with the same characters included.
Feist at least managed to craft an interesting world in Riftwar (two, actually) with one being medieval low-magic (magic being very rare) and the other one more the typical high fantasy with fantastical creatures and what not. The clash between these two worlds in Riftwar (first series) was pretty interesting. He had the political intrigue down pretty good as well. Another thing Feist generally does really well is describing large scale battles, especially sieges.
It's all downhill after Riftwar, though, where the series quickly devolves into parody territory. I managed to trudge through Serpentwar but stopped after that.