Historical Novels - recommendations? favourites?

I'm on a historical novel binge at the moment. Things have changed since I read Georgette Heyer in my teens - they are much more substantial these days and lots of the authors seem to be historians. My knowledge of history is improving by leaps and bounds. Just finished The Other Queen by Phillipa Gregory. Did not enjoy Wolf Hall.
I have also enjoyed reading the work of Sansom and Penman, particularly her trilogy about North Wales.
So what are your favourites - help me decide what to read next.