The Chernow one is an excellent overview. Manages to touch on so many aspects of his life, glories in his successes, but doesn't try to diminish or excuse the scandals.
Great book.
I saw him speaking about it on CSPAN last year and it sounded like him was on the same page as me. I have read Hendrickson, McDonald, Schachner, Randall, Brookhiser, Atherton, Mitchell, Lodge, Fleming, Cooke, Miller, Syrett, Rogow, Lycan, Flexner,just finished Knott and have a couple of more ready for my next foray into Hamiltonia.