Jilda
[member=4]Lightning[/member] says the fifth series is really good, which i'd imagine it would be considering it has brand new characters instead of the usual. I personally stopped reading after teapot/beginning of oots and am planning to read the fifth, and then go and re-read from series one in prep for the sixth series.
This forum totally got my interest in these books again, which is crazy to me as I'd of never imagined that happening personally.