Some of my all-time favorites...
>> Brilliant Historicals
Anna Campbell
Christine Wells
Diana Gabaldon
Gaelen Foley
Laura Kinsale
Lisa Valdez
Loretta Chase
Sharon Penman
>> Sizzling Erotic Romance
Eden Bradley
Elayne S. Venton
Emma Holly
Emma Wildes
Kate Willoughby
Leigh Court
Maya Banks
Moira McTark