I've recently been introduced to Jilly Cooper after years of writing her off as badly written crap based on my mum's scathing opinion when Rivals was published years ago 
So I thought it may be interesting to see who people like and loathe from the Rutshire Chronicles - I'm currently up to Wicked! (which I am enjoying because it's like a grown up Malory Towers and I am familiar with the world of schools in a way that I am not with polo and opera).
I would say the characters I enjoy reading about most are:
Taggie Campbell Black (although after Rivals her appearances haven't really shown her character as much)
Rupert Campbell Black
Dame Hermione (so awful she is entertaining)
Fenella Maxwell
Least enjoy:
Rannaldini
Cosmo
Helen
George Hungerford
Anyone else?