Well I read a few TB novels "back in the day" - read right up to Talismans of Shannara, but the quality wasn't quite the same as his earlier work although I give him some credit for having the guts to move on a few centuries and start afresh with new characters like Walker and 'kill off' Allanon who was easily his best character. Kind of Gandalf meets Dirty Harry I guess
I also got the Ilse Witch but that was the last of his books I read. I didn't really like the story & characters that much.