I loved the breadth and heft of The Widows of Malabar Hill, it made it so much more memorable. The Satapur Moonstone was a satisfactory second, I'm looking forward to reading The Bombay Prince. I've loved Sujata Massey's work since her Rei Shimura days.
The first one was good, the second one The Silkworm was quite good. Career of Evil was so-so. I picked up the fourth at the library, it was over 700 pages, I thought to myself, girlfriend needs an editor stat and put it back down. This was before the more recent controversies.
You won't be sorry, it's my all-time favorite novel (Anna Karenina a close second). I keep a tattered paperback version on my nightstand. Whenever I'm in a reading rut I pick it up to be reminded what awesome writing is.