Steph, The Rembrandt Affair is the only Silva I've read so far. I really enjoyed it and plan to read more someday, but right now I've started five different books, all of which I'm enjoying, but it's really too much.
The front-runners right now are Shroud for a Nightingale, an older PD James, and Ann Patchett's State of Wonder, which I just started and find hard to put down. I read her Bel Canto several years ago, and liked it, but was not nearly as excited about it as I am about State of Wonder. A research scientist, working for a Minnesota pharmaceutical company, must locate another scientist in Brazil who is studying an isolated Amazon tribe whose women remain fertile their entire lives. Patchett's writing is so real, makes you feel you are right there with these people.
You folks who have travelled a lot -- have you ever taken an anti-malarial drug called Lariam? That's figured prominently in the first part of this Patchett book.