I'm currently reading Tom Lake, about 50 pages in so far and I feel it's starting to pick up after initially being sceptical about the glowing reviews. The first book of hers I read was Commonwealth, followed by The Dutch House. Both of these were fantastic IMO and cemented my love for stories which document family dynamics.
Bel Canto was okay but definitely not loved as much by me as the previous two, while The Magician's Assistant has been my least favourite of hers.
What's your favourite, or indeed least favourite, books of hers?